Hi there just seen a mini bug in activement about slaying apo boss while in fact i had not killed him but naked him and stole all his stuff with the pilfeting enchant on fishing rod. Just getting the equipment unlocked the achievment.

I play on atm5 1.24 with app 3.1.2

Oh ok if its intented thats ok. Even if getting the achievment "slay an apotheosis boss" without actually killing it seemed for me as a Glitch or bug 😉

working as intended