OK, I have enough miscellaneous accomplishments now that I think I'm better off organizing them by game.
1: Bombed through repeatedly. Including 13m Lunatic both routes, 11m Jigoku 10m Makai on all lower difficulties, and speedrunning Jigoku route in 7 minutes 20 seconds.
2: Managed to get the MotK scoring record with my first (and only) Lunatic 1cc since this game is so annoying and therefore unpopular.
3: Reached stage 9 several times when going for a Lunatic 1cc with Reimu. Hopefully I'll have an actual 1cc by the next accomplishment list.
4: A0 million Hard, 78 million Extra, 56 million Easy.
5: 600 extend reached. Current record holder of all Easy/Normal/Hard categories, including Mima scores of 77m Easy, 114m Normal, 141m Hard. 1cc in all categories except Lunatic Marisa/Yuka, reached a letter score in all categories except Easy mode and Normal/Lunatic/Extra Yuka. NDNB Easy 1cc. NDNB Lunatic stage 1, 2, 3.
6: 200m Normal, 300m Extra, 200m Lunatic, 100m Easy. NDNB Extra. NDNB Easy 1cc. 2DNB Normal. NDNB Lunatic stage 1, 2, 3.
7. 1.3b Normal. 1b all difficulties. NDNBNBB Ran battle. 1DNBNBB Normal. Lunatic no-focus 1cc. Phantasm 91fps clear. NDNBNBB Lunatic stage 1, 2, 3, 5. All spells captured.
8: 3.7b Lunatic (Reimu/Yukari), 2.6b Normal (Reimu/Yukari), 2.5b Easy (Youmu solo), 2.3b Easy (Reimu solo). Lunatic no-focus 1cc. Perfect (NDNB all spells captured) Lunatic stage 1, 2, 3. All spells captured that are relevant to scoring (this excludes Last Words).
10: 1.5b Hard, 1.3b Easy, 952m Extra. No-death Hard, 2-death Lunatic. Lunatic 1 billion 2/6. NDNB Suwako battle. 2DNB Normal. NDNB Lunatic stage 1, 2, 3, 5.
11: 1.9b Lunatic, 950m Extra, 1b Hard, 700m Normal, 500m Easy (all with ReimuA). 3DNB Normal. NDNB Koishi battle. NDNB Lunatic stage 1, 2, 3.
12: 1.2b Normal, 500m Extra. NDNB Extra. 1DNBNUFO Normal.
12.8: Nothing really worth noting compared to the rest of my list. A1 Lunatic 1cc and Extra clear, I guess. And gold medals of most Easy spells.
13: 1DNBNT Hard. Reached 8 lives outside of stage practice (20 extend without dying). Easy NBNTNF 91fps Marisa(fastest character) 1cc. NDNBNT Lunatic stage 1, 2, 3 in a single run. All spells captured.