Destroyer Armor Diablo was stealing power from all the pantheons
Warping reality
And his only weakness is that his mind had not caught up to his newfound level of power so he presumes things that aren't hurting him actually are
Though that didn't stop him from casually wrecking a gigantified High Evolutionary
And ultimately what it took to defeat him was a Magic-Science combo between Thor and Iron-Man that was stated to have "had an affect on all gods, manufactured and asgardian alike".