I’ve been playing this all evening, and after some real bitches of levels (73, 95 and 99 stand out), I finally made it to level 100. The boss.
After 8752354523847 goes, I still can’t kill him. I know what to do – that bit is easy. I just can’t do it without dying. You can’t even discern how much “damage” he has left, which is a pain. Stupid game, smash smash smash.