Portal 2 Walkthrough

Table of Contents

Chapter 4: The Surprise

  1. Jump through the window and into the test chamber and get behind the wall to your left to take cover from the turret. There is also a laser back here: take note of it, you’ll need it later.
  2. All the way on the other side of the chamber is a room set back from the main chamber. If you are looking at the cube chute protruding from the ceiling, the room is to the left. Portal your way back there.
  3. In the room is a red podium button. When you press it, two redirect cubes launch off of aerial faith plates, fly into the air, crash into each other and fall into the water.
  4. Put an orange portal at the point where the blue light bridge hits the ceiling. Then put an orange portal right beneath the redirect cube chute that is farthest you. This will block the redirect cube and keep it from falling into the water.
  5. Grab one of the redirect cubes and aim the laser so that it makes a straight line through two of the target cones (the ones closest to you).
  6. Now grab the other redirect cube and use it to angle the laser at the turret. Then angle the laser through the last target cone and into the target on the wall.
  7. Fire an orange portal at the ceiling above the light bridge. Then fire a blue portal at the wall to the left of the door. Now the light bridge will take you over the pit and out of this test chamber.
  8. Don’t jump straight to the low ground in this next chamber, look straight ahead and down. There’s an aerial faith plate set back in the wall down there. Remember it.
  9. Now look to your right. There’s a redirect cube perched just out of jumping distance. But directly above the cube there’s a patch of ceiling you can tag with a portal. Do that, then stick another portal on the ground, jump through and grab the cube.
  10. Now portal your way up to the place where the laser meets the wall. Redirect the laser at the target cone that is across from you and slightly to the left.
  11. Head back down to the low ground. Put a portal on the ceiling directly above the aerial faith plate.
  12. Now put a portal on the wall across from the wall that the redirected laser is striking.
  13. Grab the cube and jump on the aerial faith plate. It will launch you to the area with the target cone.
  14. Redirect the laser again, make sure it is still going through the target cone, but also aim it at the other target cone on the platform across from you.
  15. You’ve got to grab one last redirect cube, it’s up on a high pedestal in the corner of the room. Put an orange portal above the aerial faith plate, and another on the wall that’s facing the cube. Now when you jump on the faith plate you’ll be able to grab the cube as you fly by.
  16. Set up the last redirect cube on the platform where the laser is currently striking. Use it to clear the turrets across from you, then aim the laser at the target on the wall to open the door.
  17. Put a portal on the wall across from the exit door, then put another one above the aerial faith plate. Jump on the faith plate one last time and you’re home free.
  18. This next chamber is tricky. You’ve got 3 lasers you need redirected but only two redirect cubes.
  19. When you first walk in, one laser will be striking a wall (Laser A), one will be striking the floor (Laser B) and a third is hitting a redirect cube (Laser C).
  20. Grab a redirect cube and make it so that Laser B is striking the same place Laser A is striking.
  21. Now use the other cube to make it so that Laser C strikes this spot as well.
  22. Put an orange portal on the point that all 3 lasers are now striking and put a blue portal on the wall opposite the laser targets. You may need to do some tweaking but eventually you’ll line up all 3 and the door will open.
  23. In the next chamber, look up until you find the exit door. Now look to the left and you’ll see a red podium button. Put a blue portal on the wall next to the podium button.
  24. Now put an orange portal on the wall where the light bridge is striking. Walk through the orange portal and press the buzzer. A cube will fall on the bridge. Walk toward it and the power will go out. Wheatley will show up soon to help you escape.
  25. Follow him through the secret passage and across the light bridge. Take a left on the catwalk.
  26. Follow the catwalk until you reach the top of the steps, then take a left. Go back down the steps and keep following the catwalk. At the end of the catwalk, take a left and follow Wheatley.
  27. GLaDOS will set up another test chamber: it’s a trap. Jump on the light bridge and take a right.
  28. You’ll fall of the light bridge and onto another catwalk. Do a 180 and keep following the catwalk.
  29. Eventually your only choice will be to go into a room with a low ceiling. Yellow panels will trap you in the room and turrets will appear. Use the large pipes in this room to avoid turret fire and sneak up behind the turrets. Disable them all.
  30. Once the turrets are disabled, start checking the corners of the room. If you jump and look through the gaps in the panel, you’ll find a surface you can hit with a portal. Now stick another portal on the wall inside the room and get out of there.
  31. Follow Wheatley again, but keep an eye out to your left. Eventually you’ll see a turret you can disable by sticking an orange portal underneath it and a blue one on the wall.
  32. Keep following Wheatley and move quickly because a test chamber will try to crush you. Get in the lift directly ahead of you to prevent this from happening.

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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