Nice aesthethic, juicy animations, a lot of frames, that's great. Plenty of fighting moves but main enemy is just a tiny box, that's lame. Walking is super slow and I'm afraid it's your choice to have slow walking paired with quick dashing. I'm not really fond of the idea. I think double tap or even dedicated dash button would be better. Now fighting prompts... I want to say that I'm proficient with quartercircles and Ryu's uppercuts so something is not right in your game. I could do dashes and high jumps, but arming a gun had like 10% success rate. Your health also ticks too fast so I was dying on second day with the box blocking the path above the chasm. Can you even dash with a punch/kick strong enough to break it through? I tried to destroy it with a gun but even when successful my life was already gone, battery particles flying to my dead body xD
Two more things - rebindable buttons. WASD + IOKL feels awkward, I'd much rather have arrow keys + ASZX. Another one is the camera -it's not fast enough when you're falling down and there's at least one fall + dash that you need to perform.
So overall, nice but rough around the edges, a little slugish and rigid, I wish there was an option to select different mission to test other levels.