Does anyone have any tips on how to unlock the Berserker class?

[Saranttus]

I can't release the berserker class. Does anyone have any useful tips?

 

[MisfitPit]

There are tons of posts about this and even one in guides I believe if you want to check them out. I would say find a decent sized goblin camp and gather them all up and go to town... or wait til night and for one of the gates to get swarmed and get out there and kill em all.

 

[CaptainKilroy]

Just close and build all gates on solo. Wait till day 7+ hold them until you see plenty then let them in at once start killing once they are all gathered near the tree.