Fucking. Finally. I went old school mom-bought-me-a-playstation-but-didn't-buy-me-a-memory-card and left the PS4 on rest mode for an entire day. Managed to finish the last of it in a half hour. I'm pretty sure that last hallway took more time than the rest of it combined.
Special fuck yous to:
The ceiling bumps right at the start which would annoy the shit out of me by fucking up the crystal dash shortcut.
The first walljump that I was attempting to skip with the crystal dash shortcut, only to be slightly too low and killing myself on the top of it.
What has to be a single invisible pixel in between the two wall jumps I couldn't skip. The Knight would, completely at random, act like he landed on/collided with something halfway between the two walls. It fucked up my timing and rhythm every single time it happened.
The thorns above the fifth buzzsaw. Particularly the small bit that curved downward. The invisible pixel caused the most annoying deaths, but this one was probably the most heartbreaking because I was close enough to the end to have hope.
The last set of spikes for being on their own, making me completely unable to find the rhythm to their pattern for fucking ages.
The music. Both for making me want to dunk my head in hot oil after seven hours and for making my speakers occasionally fuck up and crackle.
My PS4/the game for the occasional spot of massive, massive lag.