And Grym, the legendary Eternal Guardian of the Forge.

Clubbed to death by a 4th level Fighter. But it could have been a 1st level Fighter because the fight is 100% about puzzle or exploits and 0% D&D rules.

It could be a 50%/50% split and it would perhaps still feel appropriate. But the way Larian introduce epic looking content too early and throw D&D rules out the window just makes it fall flat, both challenge and reward.