User blog comment:EmpyreanSmoke/Supernatural Q&A/@comment-168.169.25.92-20151003155105/@comment-24834479-20151003195643

1. They would be able to hurt them, but I'm pretty sure that can not kill them.

2. The darkness would still have been destroyed.

3. Yes.

4. He wouldn't have been able to do it alone.

5. Can't help you there. You'll have to watch the new season to find out more about the war.

6. She was part leviathan.

7. Both were an influence.

8. Depends on how much power Metatron absorbed. Michael wouldn't be able to kill him, because it made him immortal, but I don't know if Metatron could kill Michael.

9. The same as above.

10. Yes.

11. Around them same since he is already nigh omnipotent, but he would probably gain some powers and become truely immortal.

12. Either in the darkness or when their attribute popped up.