Uh, definitely the tripple platforms in Ghosts 'n Goblins.
I was sacred because it took some LPers a good 20 minutes, but then I tried it and got it on my first time.
As for the spike corridor, I can clear that, but every time I cleared it, I'd get raped by the birds.. or the gravestone... or the spikes... or SOMETHING that should be easy to avoid. Then I discovered I was playing on medium, and there was a save hidden inside the spike that I could save at, step away from the computer, calm down, and come back.