Use the arrow keys to move, and space key to go back to your starting position. If it gets glitchy and your character gets stuck inside the ground, just press space to revive at the beginning of that chamber.
Chamber 6: The Great Escaper; is very glitchy, and you can glitch through the lines. Chamber 9 doesn't really work, i haven't done it yet, but you can just get the key and go straight to the door to complete the unfinished escape. The end animation has not been made yet, so the end is really simple and incomplete.