|| Overlord || I Can't Unlock The Tower Master Achievement

Im pretty sure ive gotten everything to unlock it. Im 100%: evil :twisted: and have gotten the Mother Goddess statue and everything else. So if anyone could answer why I cant get it, i would greatly appreciate it..

My Mistress damaged the Tower Heart, then after I beat the Wizard I went back and got the rest of my Magic spells/Gold bags.

Can i not unlock The Tower Master Achievement because my Mistress damaged the Tower Heart?

Any little help will be nice...