User blog comment:ImperiexSeed/ARCHANGEL or LEVIATHAN!/@comment-84.178.153.12-20120513115525

"Thirdly and lastly, Archangels can't be killed by anything conventional except for their blades"

That is wrong. Castiel killed Raphael without a blade and with ease. Death and God could also kill Archangels without blades and Leviathans could kill them with their hands like Edgar did to normal Angels. I bet Leviathans are immune also to Archangels powers except their strenght and speed but they are probably a bit weaker than Leviathans. Anyway we wont know that for sure but maybe the producer will give a statement who is stronger.