One bug for the new release, if you beat the tower and then return, going all the way to the teleport thing on the floor and head to the New Demonhunter Tower Lab you'll end up stuck. Since the crystals that block you from getting in also block you from getting out, which means you're pretty much screwed since there is no way out as far as I can tell.
Also with the mindflayer's magic helmets, what happens after all of your companions and you are enslaved? I could just keep adventuring and wasn't sure if a bad end was supposed to happen or not.
.. if a bugreport is too complicated for me to understand what precisely is broken, you propably went through some effort doing it, and its not something happening regularly. Correct me if wrong, but I can't add exeptions for players TRYING to break the game.
As for the helmet though, thats totally my ad, fixing laters.