Balance an object on your head for 10 seconds.
Save yourself at the end of Extended.
Sacrifice yourself at the end of Extended.
Finish the game by escaping.
Finish game without using hints.
Become a new janitor.
Some things are just way too heavy.
Pass the adjustable pumps without adjusting the pumps.
A way out?
It lives!
Throw a piece of coal into the oven without the piece of coal touching anything, flying for 3 seconds.
Get hit in the head with a lavarock 5 times without using the tractor beam.
Deeper and deeper.
Make 4 loops with the helicopter in succession.
Form a pentagram with the laser reflectors.
At the beginning of the game, find a way to submerge under water.
No way out, but forward.