You got the theme on point and I like dungeon crawler^^
Interesting graphics, I like the style. Sound was made good, too :)
Fighting system feeled very intuitiv and made fun. Different Enemies an even a boss, very nice.
The thing I don't liked was the actual theme disrupting the gameplay too much. The running back and forth in an then empty dungeon, was more of a filler, like in a lot of AAA titles to generate playtime xD
In my opinion a cellular automaton with respawning enemies would have fitted the theme better, something like this https://www.raywenderlich.com/2425-procedural-level-generation-in-games-using-a-...
But nonetheless a very good game. You have earned my 'Anerkennung' for that one