Player 1: There’s an Arial Faith Plate located on the floor to your right at the start of this test chamber, so place your portal on the ceiling above it and then on either the far left or far right-hand side of the floor opposite (the centre has a permanent light bridge in the way). Jump off the Faith Plate and steer yourself onto the light bridge. Fire a portal into the wall by the light bridge and remember what colour portal you used!
Player 1: Step onto the Faith Plate and as you ascend/descend, fire off a portal on the vertical wall up in the distance so you create a light bridge directly underneath you. Walk towards the wall and wait for player 2 to show up.
Player 1: Ask player 2 to jump off the light bridge and over to the ledge located to your right. Turn right to face the wall and set another portal on the light-coloured wall. Now place your light bridge on the lower part so you fall down on top of it. Get player 2 to follow you to the end where the both of you can jump into the alcove that leads to part 2 of the test chamber.
Player 1: Your first portal should instinctively be placed on the wall where the light bridge is stopped, now place another portal on the wall panel down and to the left of here (it’ll be much closer to the water).
Player 2: Whilst player 1 is preparing the light bridges for you, you need to set a portal on the angled wall panel to your left and then directly above the Arial Faith Plate. Hit the Faith Plate and you’ll land in the square area just above player 1. Fire a portal at the slanted wall in here and then drop down onto the light bridge platform player 1 created for you earlier. Now set an entrance portal back above the Faith Plate before stepping on it. This’ll send you flying across the water towards the upper ledge on the far right of the room. Once you’ve landed, you need to set a portal on the angled wall panel up here.
Player 1: Look up towards where player 2 now is and located on the right-hand wall (just to the left of the light bridge) there’s a shoot-able wall panel. Fire a portal here so your light bridge appears near the upper ledge.
Both Players: Step onto the Faith Plate and you’ll find yourselves both hurtling towards the exit and onto the next test chamber!