I really like this and it's definitely Binding of Isaac inspired! I like the weapons being just letters, the tutorial boss is very interesting, but I would like it if it had a second phase (but it is the tutorial so...) I quite literally only had one problem with it and that's when you go to pick up ammunition for your weapons it switches to whatever weapon whos ammo you picked up, which made me flounder a lot on the first floor because I felt like I had no time to switch to the weapon I wanted to use when fighting the faster enemies. Other than that this is very fun and interesting!