Portal 2 Walkthrough

Table of Contents

Chapter 2: The Cold Boot

  • Enter the test area and wait for GLADoS to give her speech and activate the laser.
  • Go stand on the panel just beneath the exit door.
  • Shoot a blue portal at the ground where the laser is firing, then shoot an orange portal at the ceiling above the laser target. The laser target is the circular object on the raised square.
  • The panel you’re on will raise up, allowing you to move through the exit door. Get into the elevator and head to the next test.
  • Use Space Bar to jump over the laser then go find the redirection cube in the corner of the room.
  • It’s blocked by debris so portal your way past the debris and grab the cube.
  • Hold the redirection cube in the path of the laser and use it to focus the laser at the target.
  • A staircase will form up to the exit door. Get up there and fire a blue portal under the cube. Now fire an orange portal on the ground next to you. Grab the cube when it comes through the portal.
  • Set the cube on the red button and head through the exit door. Grab an elevator to your next test.
  • The next test area will have a raised platform in the middle of the room. Put an orange portal on the ceiling above the platform and a blue one on the nearest wall. Then hop through.
  • Once on the raised platform, look for a redirect cube on another raised area. Jump and shoot a blue portal beneath it and the cube will fall through the same orange portal you fell through.
  • Now use the cube to direct the laser to the target.
  • Portal your way to the elevated area where the redirect cube came from.
  • There’s another laser shooting at a wall above you. Shoot a blue portal right where the laser is shooting and put an orange portal on the floor beneath the laser target.
  • The exit door will open and you can head to the next area.
  • Walk down the passage and you’ll find yourself on a platform above a pit of some kind of sludge.
  • To your right is a laser target. Put a blue portal on the wall directly opposite the target. Then put an orange portal on the wall that the laser is shooting at. A platform will begin to move.
  • When the platform gets in front of the red podium buttton, shoot an orange portal at the wall next to the podium. This will stop the platform.
  • Now hop through the blue portal and press the buzzer to grab a cube.
  • Put the cube on the platform, then jump up on the cube (this will prevent you from being struck by the laser).
  • Now fire an orange portal at the point where the laser strikes the wall. The platform will start moving again.
  • When the cube gets in front of the laser the platform will stop. Move the cube to the far side of the platform and it will start moving again.
  • Grab the cube and jump off the platform and onto the area where the red button is.
  • Put the cube on the button and you’re done with this one.
  • Exit the elevator and wait for GLADoS to clear the debris, then head through the door.
  • The next area has an aerial faith plate in the ground in front you. Step on it and you will be launched to the other side of the room.
  • Press the red podium button and a cube will fall onto an aerial faith plate in the middle of the room and start bouncing.
  • Step on your aerial faith plate just as the cube is at the bottom of its bounce and you’ll be able to snatch it out of the air with “E.”
  • Bring it back to the other side and set it on the red button. Then head through the door and you’re done.
  • In the next area step on the aerial faith plate. You’ll be bounced to two more faith plates. Try to orient yourself in the direction the black arrows on the faith plates are facing.
  • After you bounce off the third faith plate, there will be two angled panels in front of you. You’ll have to put a blue portal on one and an orange portal on the other while you’re in mid air. (If you fail, you can portal back to the faith plates and try again.)
  • After you shoot out of the portals, you’ll bounce off another plate and land on an area with a red podium button. Press the button.
  • Some trash will come shooting toward you. Press the podium button again and you’ll get a cube bouncing toward you. Stand in front of the cube, to keep it from flying off the edge.
  • Now face the podium button and look to the left. You’ll see a red button that needs a cube on it. Look at the ceiling above the red button, there’s a place to stick a portal. Throw a blue one on it.
  • Now turn around and put an orange portal on the wall behind you. Drop the cube through the orange portal and onto the button. The door will open and you’re good to go.
  • In the next test area, you’ll find your old friend the companion cube. Hop over the laser and grab the cube. It will instantly dissolve. GLADoS will give you another one which will disintegrate when you put it in the laser.
  • Finally, you can use the third companion cube to block the laser. This will cause an elevator platform to lower. Jump on it.
  • Now fire a portal underneath the companion cube and another on the wall. This will cause the cube to move out of the path of the laser and the elevator will take you up.
  • When the elevator stops you’ll see two angled panels. Throw a portal on one and get the cube up there with you.
  • Now plant a blue portal on the angled panel closest to the corner of the room. Put an orange portal on the floor of the lower level.
  • From the higher level, drop the cube through the portal on the lower level. Then jump through it yourself. You and the cube will land next to a red button.
  • Put the cube on the red button.
  • Now, place a blue portal on the other angled panel and jump through your orange one on the ground level. Move through the door to the next test area.
  • In the next area, some panels to the right will form steps that will take you up through an emancipation grid.
  • Fire a blue portal at the spot on the wall the laser is targeting, then fire an orange portal at the spot on the wall that is opposite the laser target (the laser target is beyond the emancipation grid).
  • There’s a red podium button on your side of the emancipation grid. Go push it and a redirect cube will appear on the other side of the emancipation grid.
  • Fire an orange portal through the hole by the podium, then put a blue one on the wall behind you to avoid the emancipation grid.
  • Grab the redirect cube and set it up so that it redirects the laser to the target. Now head to the next test area.
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    47 Comments on Portal 2 Walkthrough


    On April 16, 2011 at 10:30 am

    I’m stuck in a big warehouse, any ideas how to progress…if so to save spoilers can you email me the solution?

    Thanks guys :)

    anomynous nous

    On April 18, 2011 at 7:37 am

    die restart try again


    On April 18, 2011 at 1:29 pm

    Great game, got it two days early <3


    On April 18, 2011 at 6:15 pm


    You are going to want to sail through the big circle in the name. You’ll have to launch from something slanted and you’ll need a lot of speed. I was stuck here for a half an hour or so myself ;)


    On April 18, 2011 at 9:44 pm

    I’m stuck in the dark hallway in the part immediately after the Futurama-esque tube ride.

    Nova Rift

    On April 19, 2011 at 12:24 am

    I am stuck on ********s Puzzle number 16, I can’t figure out for the life of me how to hit the button that is guarded by three turrets. Even the Developer Commentary is unhelpful on how to get around that puzzle. If you want just email me at username then gmail dot com :D It is very perplexing and the fact that I have been playing it since Friday doesn’t help any :’( It is on the 360 version if that helps any.


    On April 19, 2011 at 12:53 am

    Thanks Jake, I’ve had the game for around 1 week before release for review purposes on my gaming website and couldn’t get off that stage. Now the point after where I exit lift I’m stuck, this bloody game is annoying haha!!


    On April 19, 2011 at 11:45 am

    im stuck on test chamber 4 coop with my friend were on the 4th test in the 4th test chamber. Anyone know how to do it?


    On April 19, 2011 at 12:54 pm

    NP Steve. Yeah, you are definitely at the part where every puzzle is gonna be pretty hard. I’m a little bit ahead of you and it has been slow going getting there. It’s a lot of fun though and I feel like a genius when I finally figure something out!


    On April 19, 2011 at 1:02 pm

    Same here. It’s right after the puzzle with the orange portal pit where you have to launch yourself to get a cube then launch your self to get the cube to a switch and then launch yourself onto the cube platform. After going through the tube, I’m stuck in an absolutely dark area that as far asI can tell is a small dark box. Every 10 seconds or so the screen flickers with light for about .5 seconds. I do not like this part, and want to get on with the game, how do i get past this? It’s lame. X(


    On April 19, 2011 at 1:46 pm

    Up until the escape, you just need to enter the elevator to complete the levels, same as Portal 1.


    On April 19, 2011 at 11:17 pm


    You sir are a life saver!

    I was stuck on this one for who knows how long…


    On April 20, 2011 at 4:02 am

    im stuck.

    I can’t figure out for the life of me how to hit the button that is guarded by three turrets.the same place as nova rift above. If you want just email me at username then hotmail dot com.
    big thanks

    jason malyuk

    On April 20, 2011 at 7:12 am

    i need help :( can someone insturct me on how to beat course 5-2 in coop cause these guys havent posted any new portal vids and i really want to beat it


    On April 20, 2011 at 4:00 pm

    i need help after i get pass the big warehouse and walk through offices with guy saying stuff about test subjects i go out the door to an elevator and go to the top then i am not sure where to go after that there is a place where there are 3 doors but when i portal there each one says a different comment but none open am i missing something here please help.


    On April 20, 2011 at 4:00 pm

    Me and my boyfriend are on the part AFTER the excursion tunnel set, I don’t want to give any spoilers so I won’t go into much after that. We can’t figure out course 2 of this set (I think it’s chapter 7?) Help?


    On April 20, 2011 at 4:07 pm

    nevermind got it yeah.


    On April 20, 2011 at 4:33 pm



    On April 20, 2011 at 4:41 pm

    im also stuck at test chamber 2 of the ware house and i need help real bad


    On April 20, 2011 at 6:35 pm

    Scratch that, figured it out but now stuck on the last level =(


    On April 20, 2011 at 7:36 pm

    @Susan, May you please give me some tips, Im stuck on the 2nd test w/ my cousin, & we havent been able to move for an hr.


    On April 21, 2011 at 12:10 am

    I just passed the co op and these dudes dont even have all the videos D:


    On April 21, 2011 at 6:08 am

    I beat the co-op with a friend and the single player all in one night. Started a lil after midnight when i got the game and finished up around 2 that afternoon. Some of the puzzles were challenging but thats the point. Just play the game people


    On April 21, 2011 at 8:38 am

    Grrrr, really stuck on part 38 of coop.


    On April 21, 2011 at 9:06 am

    Done :)


    On April 21, 2011 at 9:29 am

    stuck on part 38. can anyone help?


    On April 21, 2011 at 1:12 pm

    Me and my brother are stuck in 1 or two level later than the last level wich is shown by the vid’s. It seem to be the last level. Will the vids be updated? We really don’t know how to solve this level. :P

    Phil Hornshaw

    On April 22, 2011 at 12:09 pm

    Hey guys –

    All the co-op videos are now live. Hope that helps.

    We’ve also got new chapters coming in the single-player walkthrough really soon — like as soon as we can manage to get them ready to go. We’ll let you know here when they go live.


    On April 24, 2011 at 6:21 am

    How do you even smash/crush/destroy the 11 monitors? I beat the game on Thursday and I’m just trying to wrap up that last NON co-op achievement.



    On April 25, 2011 at 8:13 am

    this game is amazing and fun. the single player ia awesome, non of the puzzle had me stumped for more then 15 minutes. and the co op you can do by yourself with another profile and controller, except for the last 2 or 3 in the last set of challenges in multiplayer. fun fun fun

    Phil Hornshaw

    On April 25, 2011 at 1:57 pm

    @parker – we’re currently working on some achievement walkthrough videos that will outline stuff such as the monitors. That should be done pretty soon here — I’ll drop a comment to let you know when it’s completed and we get it updated. Until then, we’ve got more Achievement/Trophy guide-type stuff at http://gamefront.com/portal-2-trophies and http://gamefront.com/portal-2-achievements. Our guys are going as fast as they can trying to get this stuff up for everybody — we know how much you want it.


    On May 6, 2011 at 1:09 pm

    This was so much fun! Wow, I enjoyed this game immensely!

    Thank you for the helpful walkthrough :) I figured most things by myself, but it helped me with the trickier puzzles :D


    On May 21, 2011 at 9:17 am

    wow…finally it..what a game..thanx a lot for the vids..without some of them it would hav taken me ages to finish


    On May 31, 2011 at 9:01 am

    Amazing game…. i love it!! so much fun!! thnx for the walkthrough… it really squeezed my brain without the videos!!!

    waiting for portal 3!!!


    On June 18, 2011 at 11:12 am

    Fun game.

    I have a quest, since I don’t know, what I found. Maybe nothing, but.
    If you look at the video Chapter 02,07 You’ll see Wheatley after blocking the ray with the cube. A panel opens and I picked him up. I wonder if there is someting here. This is where the “Emancipation grill” is broken. And I carried him into the exit. Nothing happened, but I already had the achievement.


    On June 19, 2011 at 3:41 am

    gamefront is a great and nice and simple site to get walkthroughs….


    On June 30, 2011 at 5:37 am

    Husband and I are stuck in a level where it’s all one big outside square with water underneath it…with separate portal walls all the way around the squares…hard light surface is usable but we can not figure out how to get to the exit witch is slightly above the portal areas.


    On July 11, 2011 at 3:17 pm

    Damn!!!! I’m stuck in this huge place. Chapter 6 right after the part wher you use portals to put the blue goo drops on the wall! I’ve tried everything, just keep failing or falling in the water, HELP!!!???


    On July 21, 2011 at 7:53 am

    I am stuck at the final of chapter 7, when the hatch goes open and a kind of elevator is going down:
    116:A lift type contraption will lower itself out of the hatch in the ceiling. Get to it and get inside.
    I am trapped in the control room and I can’t jump over the railing !!!!


    On July 25, 2011 at 1:40 pm

    You don’t need to jump over the railings. Jump through the window, or rather, where the window used to be. Took me almost 15 minutes to figure that out. XD


    On October 7, 2011 at 1:16 pm

    Got this yesterday and now stuck in the neurotoxin control room.
    Thought I needed to direct the laser as per 33/34 above but couldn’t create a portal in the moving panels?
    Thought I was missing something but after reading this I’m thinking bug? Any suggestions??


    On October 8, 2011 at 3:31 pm

    Ok, got passed the neurotoxin room. You really do need to create the blue portal first outside, otherwise you appear to need to restart the level. Restarting the game/reloading a saved level didn’t help – rerunning the level from the start worked fine.


    On October 29, 2011 at 6:43 pm





    On December 25, 2011 at 11:21 pm

    Hey! thankyou so much for the walkthrough, its been a great help, although im stuck at chapter 7, #105, no matter how hard I try, I cant manage to hit the surface behind that grate with a portal! any ideas?


    On August 17, 2012 at 3:53 pm

    I’m having -major- issues with the Crab cubes.. they keep falling through the funnels for me. either their wight has been incressed or it’s an issue of “state” cuz they drop each time they shift from legs out/in. I can’t get the Master Funnel achevement and I think porting in a normal cube to complete chamber 3 as the crab cube kept falling through the funnel on the other side, may have glitched the game so it doesn’t think I beat it even though I have. my friend said spawning a cube shouldn’t disqualify achievements or progression cuz the normal cubes work fine.. crab cubes.. not so much. I spent an hour trying to do chamber 3 and hour when it should taken only moments. I made sure to place the funnle in the right spot but no. crab cube would either get pushed away to the side of the funnel or go in then drop through it only few seconds latter.. any ideas?


    On September 29, 2012 at 11:34 am

    one of your videos is broken. the 5th one down to be more specific ;)


    On December 17, 2013 at 10:55 pm

    Its great :P