This walkthrough was originally written by RainingMetal. A big thank you to RainingMetal for permission to use his work.
On the Tram, Barney rides through some tunnels in order to get to Securty point C, where he will be assigned to his first task of the day. During the ride, he can see a distinguished Scientist (Gordon Freeman) also walk onto a following Tram. When he gets off, the door is locked! The Guard on the other side will open it for him. Meanwhile, watch the Scientist as he passes by on his tram. At this time, the Guard has unlocked the door for Barney to enter. Talk to him. He'll say that the place has been all broken lately.
Go through the doors and go right. Talk to the Guard at his post. He says that Barney cannot go through this door until he gets his sidearm and uniform on. Go downstairs, head to the lobby, and talk to the Guard there. He knows what's going on today. Go right and up the elevator. On the second floor, go left to the surveillance room with three screens. These can be looked through for some extra features to find. Go to the opposite side of the hallway and head to the Armoury, where the manager will give Barney his sidearm. In the shooting range, there's some ammo Barney should collect, but not spend here. Return to the elevator and lobby, and face the guard on his chair. To the left is the locker room. Go there and collect the uniform in Barney's locker. Return to the Lobby guy and he'll point out that an elevator has broken down. Go to where the Guard prevented Barney to advance and he'll allow him to go through.
In a room with turbines, go up and through another door. Barney will meet up with a Scientist reading the daily Newspaper. He'll state that the Trams are out of order and that Barney will need to head toward the elevator through the lower hallways. In the dark corridors, Barney should turn on the Engine and find a switch near the door to turn the lights back on. Keep going through the linear hike until he comes across a river. The Tram contains a guy in a Tuxedo carrying a briefcase. Once its across, press the switch to bring down the bridge. Advance until Barney reaches another Tram station.
The elevator's nearby. Hack the elevator console to make it work. As the three people go down, something has gone wild in the labs across. The elevator goes down further, and below, some very unnatural things occur. After this chain of unfortunate events, the elevator falls down and knocks Barney unconscious.
Barney wakes up in front of what appears to be a Houndeye eating parts of a Guard! EW! Get up there, grab the Crowbar, and shoot those things! Smash the boxes to find some more 9mm ammunition, and explore the area. The door is not going to move unless the power is turned off. The source is located in a room not too far away from here. Barney will need to smash it to allow the door to be opened (smash all the boxes to search for more ammo first). Go through the door.
In the room with all the puddles, avoid the water and kill all the Headcrabs in the room. When they are all killed, go through the door to find some ammo and another headcrab! When the room is cleared, go up the stairs to find a Scientist who tells Barney to get out while he can. Back down at the desks, push a chair towards the locked door. Jump on it and over the fence. Also, back where the Scientist is, Barney can shoot the red barrels from there and open the gate by force.
There's a lift here. Activate it and jump on it quick! When Barney approaches the bridge, some Houndeyes will appear. Shoot them all and the Vortigaunts. To the left is the controls to open the door to the next area. In the corridor filled with boxes, there's some more Houndeyes waiting to pounce! To the left is another Houndeye with a corpse. Grab the Helmet there and use the controls to lower the busted lifts so that Barney can jump onto the boxes and to the ladder (the first lift will require a box nearby so Barney can jump onto that). In the damaged area is some more Vortigaunts that spawn. Shoot them to the afterlife and go down the ladder towards the sewers.
First, go right and jump across the catwalks. Turn both wheels on the pipes to stop the steam from blocking the way. The lower catwalk leads to a corpse with a SPAS-12 and the notification that this way out is futile. The above catwalk leads to a switch. Activate it so that a lift ahead will go down. It contains a box of explosives and a few Vortigaunts. Shoot the abominations and go back to where Barney started on this paragraph. The other way has a ladder attached to a pipe. Go up and towards an area with Barnacles and a body of water.
Shoot the Barnacles above and go down to where the barred window is. There's a valve in this area that will make the water rise so that Barney will be able to advance. Collect the supplies and attack the Aliens that spawn. Another one will appear on the bridge, destroying it. Jump down to the pipes and get across. Here is a flooded area with lots of aliens (including Bullsquids)! In this area is a power node that should be turned on so that Barney can go up the lift. Now Barney is able to access the Box of explosives! Collect the ammo and push the Box into the canal river, where it will destroy the turbines blocking the way. Move up and listen to the Army Soldiers' conversation. It looks like the Army isn't intending to rescue Black Mesa after all...
Stupid Bush! Anyways, go up the ladder after demolishing the boxes in the room. There's some supplies behind the two Turrets in the back of the truck. Don't bother trying to open the gate behind the truck. However, the other gate is not, and it leads to the only way Barney can escape! The car on the road has a Revolver and some Armour. Continuing only leads to a squad of Soldiers that instantly lock the door! Next to the car is a locked gate, which can be busted with a thrust of the Crowbar. Go down the manhole.
At the bottom, defeat the Headcrabs and keep walking through the tunnels. Sometimes, Barney will have to use a valve to advance through the airlocks. The same applies to the hallways Barney will have to tread. Keep an eye out for any hostile aliens. When Barney gets to a dead end with a vent, pile some boxes and climb up. Advance through the vents.
Here's where the real fun begins. Get out of the vent and into the storage room. Go left and collect the supplies from the dead Guard. To the left shows a pair of Soldiers attacking someone. Kill the two of them and collect their Guns. Talk to the Scientist the baddies attacked. He says that he and his friend, Dr. Rosenburg, attempted to get out of the place, but got caught by the Army. His colleague is the only chance of getting out. Collect the Medkit and the 357 ammo in the locker and blast the Soldier that bursts in with the SPAS -12. In the hallway, to the right, is some debris blocking an elevator. Go up and collect the supplies at the end (Dr. Rosenburg will be needed to get to the other side of that door). Go to the stairwell.
At the first door, go through and smash the boxes. At the end is the same squad Barney encountered at the beginning. Use the Revolver to take them down. Once they're killed, a Soldier will smash a window above a dump trailer. Climb up there and show him who's boss. Then go left and through the door.
In the room, open the lock and collect the massive amount of supplies. This station contains a big squad of Marines, and two cars. The blue one contains a lot of Vortigaunts to distract the Soldiers if necessary. The red one contains a Scientist. He claims that he isn't Rosenburg though. After this, a door opens with some angry Soldiers. Blow them away and check the area for additional resources.
The outdoor station has another nasty squad of Infantry and a Turret inside a box. Search the area for any noticables. The red boxcar has another Scientist. To get to him, smash the wooden objects that block the door. This one isn't Rosenburg either. A giant door will open in front of the turret, so use it to fire at the bad guys mercilessly! If any escape Barney's line of fire, go for them personally. Once all soldiers are down, go through the door towards a dangerous area. Jump into the Truck, and collect the Bazooka. Now that the Truck's top is blown off, fire explosives at the nearby Tank. Once it is destroyed, search the area for more Army men, and supplies. Go through the small door.
There's a Turret to the right. Blow it off and go to the car that contains lots of boxes. Then shoot the explosives in order to blast the door. The next area has some hostile Soldiers. Once the whole platoon is killed, get to a control panel that will turn the Turntable and open the door. Get to the engine in front of the red boxcar and use it to back up. When it is at one of the docking areas, get into the boxcar to meet Rosenburg.
Listen to his story. He says that he can manipulate the teleporation gadgets provided so that he, Barney, and his friends can get out. First, he'll give Barney a boost so that he can leap out of the boxcar and ambush the Marines that have locked the two in the boxcar. Throw some Grenades at them! Once the path is clear, Rosenburg will follow. Go through the remaining green door.
Go up the stairs and search the corridor for some foes. Rosenburg will follow as soon as the foes are dead. Collect the supplies, and go to the staircase. There's a few more Soldiers to dispatch. Go down the stairs to the elevator accessed earlier. While going up, Rosenburg will complain that the Lambda team won't be able to help their escape due to their anticipation on Gordon Freeman. He's the protagonist of the main series.
At the end of the lift, Rosenburg will open the door. He will then talk to one of his colleagues, Walter. The other one, Simmons, is at the main teleportation Portal. He and Rosenburg will open the Portal. Rosenburg states that in order for them to escape via teleportation, Barney will need to go to Xen and activate a parallel device so that they will be able to calculate the teleporation destination. When the Portal opens up, jump in!
Barney appears in Xen, the least hospitable place ever! Blast the Houndeyes away and go up the arc, where more Houndeyes wait. In the cavern is another Houndeye and a spike. Quickly go through and break the debris blocking the tiny passage.
Keep going through this maze non-stop. Once Barney is through, he will come across a pond with some Barnacles at the ceiling and a Headcrab. Kill them all and regenerate at the Healing Pool if needed. There's a secret down in the depths of this pond. Get out of the room to find an area with lots of platforms. Jump to each platform in order to get to the other side. At one point, some Vortigaunts will spawn. At the end is some more Houndeyes.
There's another "Island" here with a healing pool. More aliens will spawn, knocking down a pole. Climb across it and go down. Keep jumping and swimming until Barney reaches the abandoned research camp. Nab all the supplies first, and then tamper with the equipment so that the signal will go back to Earth. Some aliens will spawn, so run into a cave where a Vortigaunt will get crushed by some rocks. Climb them and run through the corridors as fast as possible!
At the end is a Portal. Jump in! Barney returns to Earth with thanks from the Scientist. Now here's the bad news; the power reserves were just enough for Barney to go to Xen. Now he has to go down into the cellars and get another battery to replace this one in order for an escape. Rosenburg will escort Barney to an elevator leading to the lower areas.
At the bottom, blast the Bullsquid behind the door and collect the supplies. Set some Satchel Charges at the door, trust me. Then go up the other elevator and see a Scientist and a Guard protecting the battery! They get ambushed by those damned monsters though, and the Guard gets heavily injured. Return back to where Barney blasted the Bullsquid to find the door getting breached! Once they get through, detonate the explosives to send out massive fireworks!
Collect the supplies from both the gore and the walls. More soldiers await Barney, so dispatch them all. Go up the elevator and destroy the Turret. To the left is a bridge with a waterfall of Coliant. A Grenadier pops up and fires a Grenade at Barney! After dodging the explosive, shoot him down along with the pair of Marines across the bridge. A Shotgun Grunt is behind them in a small room. A Marine and a Commando are in the room to the right. Collect the supplies and ambush the Marine that's using the radio. The Grating leads to a vent that leads to some supplies, including some Snarks. Return back and go through the path leading to the next area.
The TNT wire is broken, but that doesn't mean it can't be used! Collect the supplies here and grab a barrel. Attach it to the broken segment of the wire and activate the TNT! This will blow up the door. Attack the Vortigaunts that spawn here, and go up the ladder to find some Headcrabs. Collect the supplies and activate the Coolant pump. Then go down the elevator to find another Headcrab. At the bottom of the pool, arrange the barrels so that it lines across the bridge parts. Return back, turning the cooliant pumps back.
At the other end is some Houndeyes. If Barney touches the pool of Coolant, he'll be ripped to shreds! Run across the bridge of barrels and fend off the aliens. Move through the corridors, blasting the Aliens, and notice the two Soldiers shooting wildly at some Vortigaunts. At the top is a Vortiguant Soldier. Blow it away and move through the door, dodging the Headcrabs as Barney advances up the stairs. Eventually, he'll come across the generator controls. Kill the Bullsquid and turn both turbines on. Return back to the area where Barney last fought the Marines and go to where the Grenadier had ambushed Barney. Use the switch to raise the bridge to access the other side. Annihilate the Vortigaunts and talk to the injured Guard. This is the battery needed to get out of here! He moves out of the way and dies. Put the battery into the charging station and then transfer it to Rosenburg. Return back to the main Lab.
Rosenburg congratulates Barney and then leads him back to the teleporter. This time, Barney will be in the control room. First, activate the main power switch. In the process, the coolant pipes will bust! Go to the switch at the catwalk and turn the wheel. Two Houndeyes will spawn, so take them down! Resume turning the wheel until the meter remains at the green. When Rosenburg tells Barney to press the Damping Locks system, do it! Walter goes through first, then Simmons, and then Rosenburg himself. He sets the equipment to automatically restart for Barney to go through. In the process, Soldiers have found the site and are going to assault this lab! When the door nearby collapses, kill the two men, and resume observing the equipment. Activate the Damping Locks and run through! Dodge the Soldiers' gunfire and make it to the other side!
Barney appears at the exit of Black Mesa. Rosenburg is glad to see Barney to make it, but he seems to appear glowing green. Barney suddenly teleports to another set of Xen platforms, and then to a familiar enviroment, observing two Soldiers carrying away an unconscious Gordon Freeman away. He then teleports back to the exit, and Rosenburg is relieved that Barney didn't get into a permanent teleportaion paradox (A temporal harmonic refulx to be exact). Anyhow, the four drive off to a happy ending!
Insecurity(top)
On the Tram, Barney rides through some tunnels in order to get to Securty point C, where he will be assigned to his first task of the day. During the ride, he can see a distinguished Scientist (Gordon Freeman) also walk onto a following Tram. When he gets off, the door is locked! The Guard on the other side will open it for him. Meanwhile, watch the Scientist as he passes by on his tram. At this time, the Guard has unlocked the door for Barney to enter. Talk to him. He'll say that the place has been all broken lately.
Go through the doors and go right. Talk to the Guard at his post. He says that Barney cannot go through this door until he gets his sidearm and uniform on. Go downstairs, head to the lobby, and talk to the Guard there. He knows what's going on today. Go right and up the elevator. On the second floor, go left to the surveillance room with three screens. These can be looked through for some extra features to find. Go to the opposite side of the hallway and head to the Armoury, where the manager will give Barney his sidearm. In the shooting range, there's some ammo Barney should collect, but not spend here. Return to the elevator and lobby, and face the guard on his chair. To the left is the locker room. Go there and collect the uniform in Barney's locker. Return to the Lobby guy and he'll point out that an elevator has broken down. Go to where the Guard prevented Barney to advance and he'll allow him to go through.
In a room with turbines, go up and through another door. Barney will meet up with a Scientist reading the daily Newspaper. He'll state that the Trams are out of order and that Barney will need to head toward the elevator through the lower hallways. In the dark corridors, Barney should turn on the Engine and find a switch near the door to turn the lights back on. Keep going through the linear hike until he comes across a river. The Tram contains a guy in a Tuxedo carrying a briefcase. Once its across, press the switch to bring down the bridge. Advance until Barney reaches another Tram station.
The elevator's nearby. Hack the elevator console to make it work. As the three people go down, something has gone wild in the labs across. The elevator goes down further, and below, some very unnatural things occur. After this chain of unfortunate events, the elevator falls down and knocks Barney unconscious.
Duty Calls(top)
Barney wakes up in front of what appears to be a Houndeye eating parts of a Guard! EW! Get up there, grab the Crowbar, and shoot those things! Smash the boxes to find some more 9mm ammunition, and explore the area. The door is not going to move unless the power is turned off. The source is located in a room not too far away from here. Barney will need to smash it to allow the door to be opened (smash all the boxes to search for more ammo first). Go through the door.
In the room with all the puddles, avoid the water and kill all the Headcrabs in the room. When they are all killed, go through the door to find some ammo and another headcrab! When the room is cleared, go up the stairs to find a Scientist who tells Barney to get out while he can. Back down at the desks, push a chair towards the locked door. Jump on it and over the fence. Also, back where the Scientist is, Barney can shoot the red barrels from there and open the gate by force.
There's a lift here. Activate it and jump on it quick! When Barney approaches the bridge, some Houndeyes will appear. Shoot them all and the Vortigaunts. To the left is the controls to open the door to the next area. In the corridor filled with boxes, there's some more Houndeyes waiting to pounce! To the left is another Houndeye with a corpse. Grab the Helmet there and use the controls to lower the busted lifts so that Barney can jump onto the boxes and to the ladder (the first lift will require a box nearby so Barney can jump onto that). In the damaged area is some more Vortigaunts that spawn. Shoot them to the afterlife and go down the ladder towards the sewers.
First, go right and jump across the catwalks. Turn both wheels on the pipes to stop the steam from blocking the way. The lower catwalk leads to a corpse with a SPAS-12 and the notification that this way out is futile. The above catwalk leads to a switch. Activate it so that a lift ahead will go down. It contains a box of explosives and a few Vortigaunts. Shoot the abominations and go back to where Barney started on this paragraph. The other way has a ladder attached to a pipe. Go up and towards an area with Barnacles and a body of water.
Shoot the Barnacles above and go down to where the barred window is. There's a valve in this area that will make the water rise so that Barney will be able to advance. Collect the supplies and attack the Aliens that spawn. Another one will appear on the bridge, destroying it. Jump down to the pipes and get across. Here is a flooded area with lots of aliens (including Bullsquids)! In this area is a power node that should be turned on so that Barney can go up the lift. Now Barney is able to access the Box of explosives! Collect the ammo and push the Box into the canal river, where it will destroy the turbines blocking the way. Move up and listen to the Army Soldiers' conversation. It looks like the Army isn't intending to rescue Black Mesa after all...
Captive Freight(top)
Stupid Bush! Anyways, go up the ladder after demolishing the boxes in the room. There's some supplies behind the two Turrets in the back of the truck. Don't bother trying to open the gate behind the truck. However, the other gate is not, and it leads to the only way Barney can escape! The car on the road has a Revolver and some Armour. Continuing only leads to a squad of Soldiers that instantly lock the door! Next to the car is a locked gate, which can be busted with a thrust of the Crowbar. Go down the manhole.
At the bottom, defeat the Headcrabs and keep walking through the tunnels. Sometimes, Barney will have to use a valve to advance through the airlocks. The same applies to the hallways Barney will have to tread. Keep an eye out for any hostile aliens. When Barney gets to a dead end with a vent, pile some boxes and climb up. Advance through the vents.
Here's where the real fun begins. Get out of the vent and into the storage room. Go left and collect the supplies from the dead Guard. To the left shows a pair of Soldiers attacking someone. Kill the two of them and collect their Guns. Talk to the Scientist the baddies attacked. He says that he and his friend, Dr. Rosenburg, attempted to get out of the place, but got caught by the Army. His colleague is the only chance of getting out. Collect the Medkit and the 357 ammo in the locker and blast the Soldier that bursts in with the SPAS -12. In the hallway, to the right, is some debris blocking an elevator. Go up and collect the supplies at the end (Dr. Rosenburg will be needed to get to the other side of that door). Go to the stairwell.
At the first door, go through and smash the boxes. At the end is the same squad Barney encountered at the beginning. Use the Revolver to take them down. Once they're killed, a Soldier will smash a window above a dump trailer. Climb up there and show him who's boss. Then go left and through the door.
In the room, open the lock and collect the massive amount of supplies. This station contains a big squad of Marines, and two cars. The blue one contains a lot of Vortigaunts to distract the Soldiers if necessary. The red one contains a Scientist. He claims that he isn't Rosenburg though. After this, a door opens with some angry Soldiers. Blow them away and check the area for additional resources.
The outdoor station has another nasty squad of Infantry and a Turret inside a box. Search the area for any noticables. The red boxcar has another Scientist. To get to him, smash the wooden objects that block the door. This one isn't Rosenburg either. A giant door will open in front of the turret, so use it to fire at the bad guys mercilessly! If any escape Barney's line of fire, go for them personally. Once all soldiers are down, go through the door towards a dangerous area. Jump into the Truck, and collect the Bazooka. Now that the Truck's top is blown off, fire explosives at the nearby Tank. Once it is destroyed, search the area for more Army men, and supplies. Go through the small door.
There's a Turret to the right. Blow it off and go to the car that contains lots of boxes. Then shoot the explosives in order to blast the door. The next area has some hostile Soldiers. Once the whole platoon is killed, get to a control panel that will turn the Turntable and open the door. Get to the engine in front of the red boxcar and use it to back up. When it is at one of the docking areas, get into the boxcar to meet Rosenburg.
Listen to his story. He says that he can manipulate the teleporation gadgets provided so that he, Barney, and his friends can get out. First, he'll give Barney a boost so that he can leap out of the boxcar and ambush the Marines that have locked the two in the boxcar. Throw some Grenades at them! Once the path is clear, Rosenburg will follow. Go through the remaining green door.
Go up the stairs and search the corridor for some foes. Rosenburg will follow as soon as the foes are dead. Collect the supplies, and go to the staircase. There's a few more Soldiers to dispatch. Go down the stairs to the elevator accessed earlier. While going up, Rosenburg will complain that the Lambda team won't be able to help their escape due to their anticipation on Gordon Freeman. He's the protagonist of the main series.
At the end of the lift, Rosenburg will open the door. He will then talk to one of his colleagues, Walter. The other one, Simmons, is at the main teleportation Portal. He and Rosenburg will open the Portal. Rosenburg states that in order for them to escape via teleportation, Barney will need to go to Xen and activate a parallel device so that they will be able to calculate the teleporation destination. When the Portal opens up, jump in!
Focal Point(top)
Barney appears in Xen, the least hospitable place ever! Blast the Houndeyes away and go up the arc, where more Houndeyes wait. In the cavern is another Houndeye and a spike. Quickly go through and break the debris blocking the tiny passage.
Keep going through this maze non-stop. Once Barney is through, he will come across a pond with some Barnacles at the ceiling and a Headcrab. Kill them all and regenerate at the Healing Pool if needed. There's a secret down in the depths of this pond. Get out of the room to find an area with lots of platforms. Jump to each platform in order to get to the other side. At one point, some Vortigaunts will spawn. At the end is some more Houndeyes.
There's another "Island" here with a healing pool. More aliens will spawn, knocking down a pole. Climb across it and go down. Keep jumping and swimming until Barney reaches the abandoned research camp. Nab all the supplies first, and then tamper with the equipment so that the signal will go back to Earth. Some aliens will spawn, so run into a cave where a Vortigaunt will get crushed by some rocks. Climb them and run through the corridors as fast as possible!
At the end is a Portal. Jump in! Barney returns to Earth with thanks from the Scientist. Now here's the bad news; the power reserves were just enough for Barney to go to Xen. Now he has to go down into the cellars and get another battery to replace this one in order for an escape. Rosenburg will escort Barney to an elevator leading to the lower areas.
Power Struggle(top)
At the bottom, blast the Bullsquid behind the door and collect the supplies. Set some Satchel Charges at the door, trust me. Then go up the other elevator and see a Scientist and a Guard protecting the battery! They get ambushed by those damned monsters though, and the Guard gets heavily injured. Return back to where Barney blasted the Bullsquid to find the door getting breached! Once they get through, detonate the explosives to send out massive fireworks!
Collect the supplies from both the gore and the walls. More soldiers await Barney, so dispatch them all. Go up the elevator and destroy the Turret. To the left is a bridge with a waterfall of Coliant. A Grenadier pops up and fires a Grenade at Barney! After dodging the explosive, shoot him down along with the pair of Marines across the bridge. A Shotgun Grunt is behind them in a small room. A Marine and a Commando are in the room to the right. Collect the supplies and ambush the Marine that's using the radio. The Grating leads to a vent that leads to some supplies, including some Snarks. Return back and go through the path leading to the next area.
The TNT wire is broken, but that doesn't mean it can't be used! Collect the supplies here and grab a barrel. Attach it to the broken segment of the wire and activate the TNT! This will blow up the door. Attack the Vortigaunts that spawn here, and go up the ladder to find some Headcrabs. Collect the supplies and activate the Coolant pump. Then go down the elevator to find another Headcrab. At the bottom of the pool, arrange the barrels so that it lines across the bridge parts. Return back, turning the cooliant pumps back.
At the other end is some Houndeyes. If Barney touches the pool of Coolant, he'll be ripped to shreds! Run across the bridge of barrels and fend off the aliens. Move through the corridors, blasting the Aliens, and notice the two Soldiers shooting wildly at some Vortigaunts. At the top is a Vortiguant Soldier. Blow it away and move through the door, dodging the Headcrabs as Barney advances up the stairs. Eventually, he'll come across the generator controls. Kill the Bullsquid and turn both turbines on. Return back to the area where Barney last fought the Marines and go to where the Grenadier had ambushed Barney. Use the switch to raise the bridge to access the other side. Annihilate the Vortigaunts and talk to the injured Guard. This is the battery needed to get out of here! He moves out of the way and dies. Put the battery into the charging station and then transfer it to Rosenburg. Return back to the main Lab.
A Leap Of Faith(top)
Rosenburg congratulates Barney and then leads him back to the teleporter. This time, Barney will be in the control room. First, activate the main power switch. In the process, the coolant pipes will bust! Go to the switch at the catwalk and turn the wheel. Two Houndeyes will spawn, so take them down! Resume turning the wheel until the meter remains at the green. When Rosenburg tells Barney to press the Damping Locks system, do it! Walter goes through first, then Simmons, and then Rosenburg himself. He sets the equipment to automatically restart for Barney to go through. In the process, Soldiers have found the site and are going to assault this lab! When the door nearby collapses, kill the two men, and resume observing the equipment. Activate the Damping Locks and run through! Dodge the Soldiers' gunfire and make it to the other side!
Barney appears at the exit of Black Mesa. Rosenburg is glad to see Barney to make it, but he seems to appear glowing green. Barney suddenly teleports to another set of Xen platforms, and then to a familiar enviroment, observing two Soldiers carrying away an unconscious Gordon Freeman away. He then teleports back to the exit, and Rosenburg is relieved that Barney didn't get into a permanent teleportaion paradox (A temporal harmonic refulx to be exact). Anyhow, the four drive off to a happy ending!
