Spoiler: Hint Claustrophobia is like auto-piloting. Spoiler: Solution Spoiler: Step 1 So you notice that B would always automatically run to the front, where the overhead rail ends. There's also a draggable switch nearby that pushes the pillar in. What would you do if doing the two moves separately won't work? Spoiler Yes, do both at the same time! Spoiler: Step 2 So, you crossed the bridge! Now B arrives at a strange tree which he can't stop running around. Next to the tree is a movable block. Try to recall what you did to form the bridge just now. Spoiler Yes, push the block inside while B is approaching! Spoiler: Step 3 Now that you have kicked the zapper bot off the cliff, continue to move forward. You'll arrive at a draggable lift. Send B down to the water. You'll notice that B would be running around the underwater loop, but what's the point of it? Spoiler Set B into looping, but before he runs into it, move the lift up immediately. Spoiler: Ending Now you've conquered your fears! B is climbing up the entire mountain. When he arrives at the mountain top, tap the end of the staircase!