It's a good solid game. I think they could have maybe made it so the game is like one consistent playthrough that follows the story of the 3 mcs you can choose rather then playing through Darn tower like 3 different times.

But for the first play through you play of it, it's actually quite fun. Difficult but not annoyingly so, I had to put some more thought into my level as I got higher in the tower, having to grind a bit, but never spend hours at a time grinding. Then subsequent playthroughs were on a lower difficulty as I just wanted to see what happened in them.