First, very impressive. Needs proper 21:9 and gamepad support, but I would pay full price for this if it were expanded into a full length game. Puzzles, traps you can lure the butchers into before you have a weapon, More ways to raise hell than just opening cages, etc.
Better butcher AI too: They should not stand there waiting to be killed if you're in an inaccessible spot and they just saw you shoot their buddy to death. If they retreated around the nearest corner and lay in wait for you, for example (but you could lure them out with noise). Hitting them with barrels should stun them briefly imo
I got Little Nightmare vibes from this, which is a fine game to be compared to. Oh, and the ability to pick up and use the power saws from fallen butchers! Balanced by limited gas, and the fact that they constantly make noise.
Anyway thanks for blessing us with this awesome game! I hope you feel encouraged to do more with it.