Oh jeez, I never realized just how much I challenge myself. Let's see:
Play difficulties WAY above where I'm at
Blind run of IN Normal (Failed at Kaguya)
Completely blind against Normal EoSD Rumia (Failed at Night Bird)
Played with mouse + tried S6 Path A for the first time, IN Normal (1CC)
No-focus run of EoSD Normal (Failed at Sakuya)
Pacifist run + grazewhoring EoSD Normal (or was it Hard?) (Failed somewhere around Meiling)
Trying to (and almost did) capture VoWG Normal on my first try against it. (Got hit by last possible bullet as Kanako was blowing up)
Regularly playing MarisaB in UFO (lolno)
I'm sure I've done more, but that's just off the top of my head.