Got bored n ripped the map and made a guide for it + a guide for each ending.
Ending 1:
ONLY Fuck the Green key (Goblin Elite), Blue key (Imp Elite), and Red key (Werewolf Elite) enemies. This ending also occurs if you somehow fuck less than that.
Ending 2: Fuck 4-5 enemies.
Ending 3: Fuck 6-10 enemies.
Ending 4: Fuck 11+ enemies. (This is weird since there's 37 enemies, but the minotaur says you took out all of them)
NOTE if you take out multiple enemies with 1 attack, it will only count as 1 kill.