Blue Devil in the Belvedere Pre-Nerf (v1.2.1) Lunatic 1cc (Reimu)
5So when this game first came out, its difficulty was actually higher. The power of your shot varied based on your Power Rank, which means that after your hyper runs out you actually go back to zero power (unless you were proactive with filling the last gem for a chained refill).
Oh and bombing and dying reduces your power rank by 1 too, lol.
What this meant was that if you end a hyper in the wrong place, or bomb or die in the wrong place, you could very quickly throw yourself into a low-power spiral.
Eventually, v1.3.0 was released which nerfed all of this by making power rank essentially irrelevant. Ranks 0-3 were your regular shot, and Rank 4 was your hyper shot. Also the penalty for bombing was halved to 3 gem fragments (0.5 power rank).
I'm not actually sure whether any patterns got nerfed in v1.3.0 but doesn't seem like it, most of the nerf was the power system and other shot-side balance changes.
I realized my lunatic 1cc was in v1.3.0, so I went back and got one with v1.2.1, the last version before the nerf. It took a couple tries, again often due to a single mistake that sent me into a spiral. Still fun though and still one of the GOAT fangames.
Buy the game: https://store.steampowered.com/app/1365750/__Blue_devil_in_theBelvedere/