This is too good. You have coded something insane.
The controls are already insanely easy to follow. It's literally just moving a mouse.
The blood splatters are a level of game juice I didn't think conceivable. Especially with the CRT monitor effect that makes it look like something is wrong with the game. (And it IS. BLOOD EVERYWHERE AAAAA)
The upgrades carry significant weight. I can already see scenarios where theories about the best builds to go for.
Boss entries are MENACING. Maybe need a teeny tutorial about them but still...
Just... wow...