Found all 9 endings.
Made a final choice in "Ending: Vengeance or Freedom".
Chose a path in "Choice Cube: Three Paths".
Accepted the Governor’s pardon.
Played through all tiers and picked an ending in under 1 hour & 15 minutes.
Made a final choice in "Ending: Are We Done Playing Games?".
Granted XE-47629 the opportunity to avoid certain death.
Completed “Columnial” without being burnt by any flamethrowers.
Made a final choice in "Ending: Trust".
Played through all tiers and picked an ending in under 2 hours & 30 minutes.
Pick up the Magnet Gun in Tier 4.
Picked a path in "Choice Cube: A Matter of Trust”.
Found the Magnet Gun in Tier 3.
Went to the public bathroom.
Left confinement without proper escort.
Saved XE-47629 from the horrors of the trials.
Flew all the way to the lever without touching the ground in “I’m Flying!”.
Completed “Seesaws” in less than 20 seconds.
Triggered a spike trap with your body... and survived.
Completed “Trick Jump” in less than 8 seconds.
Acquired a stable version of the D-28 prototype.
Chose the correct number of boxes in "Choice Cube: Remember the Boxes".
Hit both buttons in “The Pit” from the topmost platform.
Completed “3D Puzzle” in less than 60 seconds.
Completed “Target Practice” without hitting both buttons.
Endured the pains of electricity, poisonous gas and fire and lived to tell the tale!
Took the high road in “Crouch And Climb”.
Completed “Hard WMMPs” in less than 10 seconds, without touching the floor.
Picked up the D-27 Magnetic Propulsion Device.