I completed the game.
Reading the comment below, it looks like I skipped the ending scene too if there's one, I saw the eye in the middle of space and that's it.
The game is super fun. The environments look very good and varied, The game really looks great through the windows and such. New rooms replacing the old ones is a good implementation of the endless theme and they are enough varied layouts, I really like actually handmade layouts in games with some automatic generation so this was the good kind to me, the change is organic and when I realised that, only after a while, I was like "Oh that's cool".
The game is super pleasant to control, movement feels perfect, the turn-based combat which allows you to shoot out of the grid is satisfying. Rise in power is satisfying too, I enjoyed going from a loser who needed to walk slowly (and died a few times) to a war machine just rushing through the dungeon. The music can get repetitive as you spent a long time in the dungeon but that's fine in the context and I like it.
Looking for the 3rd keycard with 1000 ammo, 100 health while finding 3 times each other card was not the most fun part of the game.
This is an excellent entry, thanks for sharing.