Instructions
Go through the door that the gremlins unlock for you.
Use paint thinner on the yellow wall in the next room to open a path. Dodge the moving walls as you go down the hallway.
Jump on a piston at the end of the hallway and go down the walkway to reach a silver pin.
Fall off the walkway and go through the door.
Stand on a glowing pink platform, which will start a timer. Run by each valve and spin to close them. If you hit them all before time runs out, you will open up the next path. Pete will show up and ask you to search for his log book.