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... yes, joke, joke of a design. The thing is silly hard to beat:

4 waves: bandits, squelettons, rats and lizards. Boss rush essentially with a QTE and some evasion thingie.

Sometimes you will get comboed and lose half your health and when you finally arrive at the end the lasers you have to evade... are basically unavoidable... and you lose.

Seriously, this is a reason to not get this game, it really spoils it for me and instead of developping more dlc they should fix it.

hint: if you get killed on the boss just alt+F4 twice and you'll be able to retry, but even then you're in for a treat, a sour treat.