Player 1: As soon as the chamber starts, hang a left and place a portal on the side of the ledge and then on the single wall panel located just above on the left-hand wall. Once you're up beside the red button, push it to drop some repulsion gel onto the floor near the lift.
Player 1: Drop down off the ledge, jump off of the repulsion gel onto the lift and once you rise to the upper floor, press the red button up here to start another flow of repulsion gel near the lift on the upper ledge. Now drop down to the ground floor again, go back in your original two portals and you should now notice the lowered lift just up ahead. Jump off of the repulsion gel and get up onto the lift. Ask player 2 to step off the button to raise the lift you're on. Once you're up here look for the encased wall panel, set a portal up here so your friend can nip through the lower portal and join you at 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.