ProZD - facing the final boss after doing every single sidequest

It's kind of fucked up, like when you don't do any side quest you'll die repeatedly to the boss because you're too weak, but when you do a lot of sidequests, you get both a shit-ton of goodies, possibly the best weapon in the game, and a lot of levels, so you're going to the boss, he does his speech about his evil plan, and then the climatic battle is over in like less than 10 seconds, so while he's doing his dying speech you're just

Pretty much this: