Not much to say since it's just a training room, but it felt fairly nice. The animations/art are charming and "good enough for a shipped game" I'd say. I remember you went through and basically redid everything a long while ago, and it paid off.
I'm kind of surprised there's no hitstop or screenshake though, have you ever experimented with them? A few frames of hitstop+hitstopshake when enemies get hit would probably feel amazing. I just love that shit too much though, you might be one of those devs who don't like it.
Anyway, I made a short recording of the couple minutes I spent in it if you wanted to see:
After what was recorded, I spent another minute or two messing around with duck-cancels and the helmsplitter, I stopped recording because I thought I had found everything