Thank you for making it. I now have a few hrs of experience and I have found a few more bugs, I am not sure the proper way to be polite about this as I am not usually someone who comments on games, so I will just list them.
If the player is missing only one heart and 2 hearts happen to be next to each other, both hearts get consumed
The first boss can get stuck in a wall, when it happened to me, I was still able to shoot them, but they could not shoot me
I think there is a visual bug with valuable bullets where a kinda ghost tile will occur, but I am not 100% on that
The item that looks like a ladybug crashes the game (shame because it looks like it would do something cool)