Wow. Treachery: a series of insta-deaths, which all force you to restart at the last checkpoint. Hey, how about blowing air that pushes you off a cliff while you're stuck in a 5 second animation? Or how about a walkway falling out from under you while you can only walk, can't run, jump, dash, etc.?
EDIT: OK so the second part wasn't so bad, but I think I died on that first part like 50 times. I died so many times last night that I just turned the system off and went to bed because I didn't want to deal with it anymore.