Hall of Infinite Doors
The old woman throws a handful of ultrasharp darts at you. You try and 'dart' out of the way (haha get it?), but her aim and skill is so good that they impale themselves in your gut before you can even move. You expect a painful death from bleeding, but actually the darts were poisonous, so instead you get an even more slow and painful death from rotting inside out. What a pleasant suprise!