Classic Enter The Gungeon style boss fights :) Creative and fun use of bullet patterns, some of them remind me of the Mine Flayer, a Chamber three boss in ETG. Which is like remembering a nightmare xD just kidding, though.
Basic mechanics and gameplay is good, but I think that the dash mechanic could use some work, it was a bit difficult to use since it felt a bit like a blink or teleport.
I'd definitely play this in the future if you'd add some sick new weapons and some game feel!