Nice solid game! The overall atmosphere of the game was on point, and I played a couple of runs just to see how far I could get- very enjoyable once I figured out how everything worked. My final run ended at level 12 or 13 after I took either 12+9 damage or 129 damage on a crit.
Since you asked for critique- the biggest space I can see for an improvement (besides a possible tutorial and extra features now that it's not on a time crunch haha) is in the UI. One I got into the rhythm of it, I could tell when at least some of the monsters would attack, but being able to see a turn order would've been very nice, as well as hopefully being able to see all my unlocked skills at once even if not all of them are active at a time.
On that note- skills! I liked having to use attack / defense to charge skills, but the ui for them was also confusing and probably needed adjustment to make it a bit clearer, especially since it was bugged for fullscreen.