Player 1: Ignore the Arial Faith Plate on the ground for now, instead set a portal on the wall where the permanent light bridge is. Now ask player 2 to stand on the Faith Plate and as they're soaring upwards, fire a second portal on a lower part of the wall below player 2. This'll create a platform for them to run up to the permanent part of the light bridge.
Player 2: Swap out player 1's portal with your own at the top and then ask player 1 to stand on the Faith Plate. Just like they did with you, you need to fire an exit portal on the lower portion of the wall, so the light bridge extends underneath them. Once player one has joined you at the top, look behind you for the slanted wall panel up in the distance and fire a portal up here. Now have your second portal positioned at the end of the light bridge you're both currently on and this'll create a walkway.
Player 1: This is similar to the first half of the test chamber, except instead of climbing upwards, you need to make your way down. So place a portal on the wall panel at the end of the light bridge and then down below you on the wall panels extending straight down and fire a second portal here. Player 2: Stay exactly where you are for now, let player 1 do the next few steps for now.
Player 1: Walk through the portal you made and make your way to the chasm at the far end. If you turn 90 degrees to your left and peer downwards, you should spot a shoot-able series of wall panels. Get your portal down here and a new light bridge should appear directly below you (preventing you from following into the deep, dark chasm below). With player 2 remaining where they are, walk towards the wall and then turn 90 degrees to your right, you should spot three wall panels lined up underneath a white exit sign. Place a portal on the middle panel and walk across until you notice the metal floor panels flipping up below you.
Player 1: Look into the distance to your right and past the angled wall panel there's a shoot-able wall panel right at the back of the chamber. Get your light bridge to come out of here and it'll extend to where you are now.
Player 1: Once you're up here, replace the light bridge on the same wall it was located on just previously, and ask player 2 to stand directly over the portal you just fell into. Once they're ready, shoot the portal on the wall beside or below you, and watch as player 2 flies through the air right towards you and the exit.
Welcome back to Aperture Science, a world where your Companion Cube isn’t you’re only company. Take control of Chell once again in Valve’s sequel which takes you on an humorous and puzzling adventure and in our detail-packed guide we’ll show you:
How to solve every test chamber first time.
Conquer every co-op chamber with a friend.
Loads of High Definition screenshots and videos showing you the solutions to every single chamber.
High Definition strategy videos for every achievement in the game.
Uncover all of the hidden secrets and Easter eggs.