Compared to Diadem, Palace of the Dead is way better. It's a neat dungeon crawler that does require you to stop and think about monsters on the later levels (41-49. Monsters can flood a single room and even if you're level 60, they will potentially kill you. Especially if there's a Landmine and especially the ones that have non-telegraphed attacks). I am disappointed with four of the boss fights, though. Especially the penultimate fight, as I kinda expected more from it.

I'm curious to see what floor 51-200 in 3.45 offer in terms of difficulty.