NEIL POOLE

use the phone to goto the other phone pick up mobile and move the room to your left then transport back to the other room using the red phone, not your mobile. move the room up to the top right corner then walk through the door to the empty room then move that room to the gap between the exit and room with the water in it, now use your mobile and transport to the left phone then move that room to above the empty room then transport to the room with the pump then move that room to above the water then pump the water into the top left room, then move the room with the pump into the bottom right hand coener, go threw the door and pick up helmet, put helmet on and move the room up then to your right then climb down the ladder then transport into the water filled room then move that room into the gap on the bottom between the empty room and the pump, transport into the pump room, climb the ladder into top roomm then move room your in above the exit and climb down ladder to the exit.