I'm almost there.
Aside from epic fail against the boss (which, admittedly, is completely batshit random - it committed suicide on me on the first hit twice), I've gotten Epiphany in BIT.TRIP FLUX down to just four misses. I can thread the needles easily, I consistently grab every single Bonus Beat, and the only thing stopping me from a true Perfect are the ADD sections.
And this was from a cold start.
I've already no-missed Perception's boss, and I've gotten Catharsis' boss down to one miss.
I fear I may need to warp my own perception to find my Perfect.