A very nice game, for a game-jam it has a lot of features.
The issues I found were :
The spawning is a bit of a problem. I know it can be quite hard to get a good spawner working, but maybe at least make it so that the enemies spawn outside of the camera view.
Also the bat enemy can go through walls/floors, but i think it would've been better to have it just track the player around said walls/floors.
The flying fire enemy can sometimes teleport into walls, and the ground enemies are kinda bugged, they alwasy come to the wall left of the player spawn.
Also the players can get stuck to walls (which can be easily fixed actually, just make a phycics material with no friction and add it to the player rigidbody2d component)
The things that I liked:
The art is really good, everything tiles nicely, the lighting fits the theme of the game, you can easily distinguish the enemies from the background and the animations are very well done.
The music and sfx are also very nice.
It is a very nice game-jam game and i enjoyed playing it