My list:
Everything.
In every game.
With every shot type.
With every challenge.
Pacifist.
:dragonforce:
Okay not really.
To put it simply, every official game beaten on lunatic, every Windows stage (I'd do PC-98 if there were some kind of stage practice) beaten no deaths on lunatic, various challenges here and there, perfect Yuyuko fight, etc. etc.
Oh, and all spell cards captured. That's one that may need specifying. :S
---
Actually, I just remembered I made a comprehensive listing of all my accomplishments a month or so ago. In the event anyone really wants it, I'll stash it here:
Highly Responsive to Prayers: Lunatic 1cc both routes, all bosses perfected on lunatic
Story of Eastern Wonderland: Lunatic 1cc, Extra clear with two shot types
Phantasmagoria of Dimensional Dream: Lunatic 1cc with Yumemi
Lotus Land Story: Lunatic 1cc with all shot types, Extra clear with all shot types (no deaths, no bombs), first three stages perfected
Mystic Square: Lunatic 1cc with two shot types, Extra clear with all shot types (no deaths)
Embodiment of Scarlet Devil: Lunatic 1cc with all shot types, Extra clear with all shot types (no deaths, no bombs), all spell cards captured, all stages beaten no deaths
Perfect Cherry Blossom: Lunatic 1cc with three shot types, extra and phantasm clear with all shot types (no deaths for both), all stages beaten no deaths, stage 6 perfected, all spell cards captured
Immaterial and Missing Power: Lunatic 1cc with Yukari
Imperishable Night: Lunatic 1cc with two teams, Extra clear with all teams (no deaths, no focus), all stages beaten no deaths, all spell cards captured
Phantasmagoria of Flower View: Lunatic 1cc with Aya (don't care if she's cheap I hate this game), extra clear with Komachi and Shikieiki
Shoot the Bullet: All 85 scenes cleared
Mountain of Faith: Lunatic 1cc, Extra clear with all shot types (no deaths), all stages beaten no deaths, all spell cards captured, post Momizi stage "capture"
Scarlet Weather Rhapsody: Lunatic 1cc with Youmu
Subterranean Animism: Lunatic 1cc, Extra clear with three shot types (no deaths), all stages beaten no deaths, all spell cards captured
Undefined Fantastic Object: Lunatic 1cc, Extra clear with all shot types (no deaths), all stages beaten no deaths, all spell cards captured
Unthinkable Natural Law: Lunatic 1cc with Meiling