Its complicatedly programmatic as usual.
I actually generate limbs for the characters and create target poses by modifying the limbs positions in different hardcoded functions [I've created better animation systems before, and it makes me miss it when I make bad ones lol]. U can see it better if you zoom in with I.
The color effect on the hit swipe is from a per pixel shader than maps the colors to a color palette and does a pseudo dither if its in between colors.