User blog comment:ImperiexSeed/Archangels are weak, don't you agree?/@comment-3481504-20150922230303/@comment-95.112.195.209-20150922233631

Maybe they can be destroyed by extreme physical conditions as well, for example inside a Black hole.

Lets summonize all their weaknesses:

-Leviathans could eat the Devil for breakfast

-Cain (No doubt Cain xould beat up the devil like Dean did to Castiel)

-Jesse Turner

-Magic

-God

-Death

-The Darkness

-Angel Blade

-First Blade

-Metatron with Word of God

-Godstiel

-Death's Scythe

-Eve

-Oberon for sure, he is so powerful, he created a key that could split souls, that was even beyond Death's power.

-Probably affected by Metatron's Angel banishing spell

-Sam Winchester, he overpowered Michael, although this rather indicates that Michael can't think and react so fast.

-Heaven's Weapons.

-Maybe fairies ?