- That One Achievement: Perfectionist, which requires getting EVERY ENDING IN THE GAME without any unnecessary button presses. So if you make one mistake, you have to start all over. Only 3% of players have gotten it in the original version. Especially annoying because of...
- That One Level: The "Essence Of Machines" ending. Aside from the Unexpected Gameplay Change, it's one of only two endings with a genuine time limit. Chances are high you'll either have just enough time to burst every blood clot and kill the baby, or you'll run out just before you can deliver the final blow.
YMMV / Please, Don't Touch Anything