Talk:Troll/@comment-77.98.238.169-20180826024006/@comment-45.56.46.26-20180826041147

Apparently.

It's not quite clear what exactly would happen if you cut a troll's head off, whether it would reattach, or the body would grow a new head, or the head grow a new body, or both.

But from the case of the troll Lupusregina killed, it's apparent that whatever keeps a troll going has to be shut down with fire, acid, or something else that destroys tissue at the cellular level. Otherwise it will regenerate eventually.

It's not clear how much fire/acid you need. It seems if you disable a troll enough to make it helpless while you hack open the chest or whatever, you should be able to burn some particular important organ, like the heart, and shut it down. At least, it would be too OP if you had to broil the whole thing through, given how big they are.