I like the style, but I couldn't get that much into it. Maybe it's just that roguelikes aren't my cup of tea, but I have a few issues, some of which might be because I'm obsessive in some ways.
* Enemies sometimes spawn stuck at the bottom of the screen.
* There doesn't seem to be a pause button?
* Bouncing weapons like the basketball and billiard balls (the weapons I got the first two times I played) are basically downgrades because of how many short enemies there are
* Actually every weapon I've encountered so far is worse than the handgun. Without the ability to voluntarily switch weapons, I've gotten killed because I was stuck with a bad weapon.
* Between bloodstains, corpses, bullets, pots, coins, and the small size of the screen, there's generally too much visual clutter.
* The combination of small rooms, large player hitbox, and fast and unpredictable enemies makes dodging painful, especially against the little rabbit things.
* The map upgrade is almost useless because the minimap doesn't display further than two rooms away.
* The first boss is harder than the second boss.
* The chaser appears suddenly a solid meter in front of the door instead of actually coming out of the door, that killed me my fourth and so far final attempt.
* There's too much long-term luck involved in item availability and heart drops.