This is so much fun! The combat has a really unique flavor to it. The art style is simple but really charming, clear, and cohesive. I really appreciate the design symmetry: how friendly fire is a thing, how traps work on enemies, how enemies seem to use the same skills the player can use.
I only played for an hour and didn't see anything, but the mages, thieves, and goblins were all fun to fight against. The enemies without tells are a little more meh. Taking damage from stuff like rats and bats that just run into you felt a little more awkward and random, it would be cool if they had a 1 frame windup animation too.
There are some changes I'd suggest but they might be too big given that you're planning on releasing later this year. Given the robustness of the loot system, and all the abilities tied to enemies, I feel like strict classes are working against you here. It would be cool if you could mix and match stuff more. You could also generate adventurer based enemies with more variety by mixing skills around like this.
I'm also not sure if the perma-death is the best inclusion given that levels seem static. It would be cool if there was a mode where you could keep your dude but maybe have to start over from a uncommonly spaced checkpoints. It's interesting that you keep all your floors unlocked but starting from the beginning felt necessary with a fresh character anyway.
Had lots of fun, will definitely wishlist this and pick it up when it comes out!