Looks to have good potential. Maybe you could add hooks and uppercuts as well -w-
2-player local punch-out-style boxing
work in progress!
code at: https://github.com/okaybenji/boxing/
w a s d f g
i j k l ; '
also supports gamepads! xbox one at least, ps4 is weird, others untested. just press buttons, you'll figure it out.