Well, this isn't much of a vent, but after being gone for ~6 months from this game, you forget things, like the level 16 PU, and other things you should (Like I actually forgot where the level 72 PU is, but more often than not I die in the level 51 PU, plus the Old Rusty Key dungeon is really frustrating when the bombs gently slide down the platform, and they fall JUST BEFORE they blow up, but just early enough to reach the range of the button, but late enough to not be able to react to them, meaning a: Life loss, B: challenge loss, and C: The two above. No points for guessing which one occurs to me the most (Hint: It's C))
Anyway, only non-vent is I'm back, and should not leave now
