Despite the slow swing speed, I found the bat to be better than the gun.
Gameplay worked fairly well, though the repeatable control tutorials were too easy to accidentally retrigger. Found some animation glitches, such as going into a wall slide from standing on the elevator as it descended. But the game played fairly well in spite of these. Movement was on the fast side, but controllable. Upgrades gave a very Metroidvania progression pattern.
In short, a good little game.