Yes, if you get op powers you stomp it, if you don't you actually have to think and have a hard time.
That is the exact point of a roguelite game, which I'm guessing you've never played, and Torghast is actually a roguelite within WoW.
So you're complaining for nothing because it is exactly as it should be. I'd kinda even want for it to be a bit harder, completed all of my runs so far. Wish you'd fail one every now and then, but maybe that will be the case in Twisting Corridors.
Edit: forgot to mention that there is one bad thing about it and that is the minions that spawn while out of combat. Makes it so you can't get up and grab a drink or go to the toilet, which is neither fun nor interactive.