The berserker is meant to be the subclass that most heavily incentivizes investing in armor. For some people, who already like defense, this works really well, but lots of folks (especially more experienced players) are used to evading attacks and investing in high damage output, and so berserker doesn't fit their playstyle very well. It's also a bit unfortunate that a lot of his special power has to be so tricky to access compared to other subclasses, but it's sort of necessary given how powerful all that extra damage and defense can be. Older iterations of the berserker did things like granting the ability to cheat death for free, and were absolutely busted in terms of winrate as a result.
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