Berserker!Thor is one of my favorites tales (I even wrote a fic about it). I believe it’s only Loki who can bring Thor back to himself when he is so far gone.
I read a lovely post “The Dark World” fic by umakoo about Thor falling into a Berserker state due to his grief and Loki going to him to bring him back from the brink.
You can buy this print in my print shop! Use code: TH4NKS to get 10% off. (Discount will run through December 1st.) I’m trying to get home for Christmas, every little bit helps. Thank you :)