I only got a score of 50 because I got bored of holding the space bar.

Even though it's nice that the graphics and presentation are a little better (themed around the Game Boy) it doesn't look like you changed the gameplay much, (which itself is on the easy side and the only real challenge is not losing your beat) and still feels Game and Watch-esque.

Have a look at the Game and Watch Gallery series, which have a collection of multiple games, each one having both a 'classic' mode, which recreates the original, and a 'modern' mode, which revamps the graphics + gameplay in a way that's not possible on the original Game and Watch system.
https://www.mariowiki.com/Game_%26_Watch_Gallery_(series)

If I was to give this game the same level of magic I did for Gun Shit Die, I would've taken that approach, ie. in 'modern' mode, there'd be smoother animation + movement for both Tricky and the grunts, the grunts move in different patterns, and maybe have Sanford, Deimos, Hank, etc that move in less predictable patterns and take more hits, only being knocked back if not killed.

ok this is epic

welp, is good, I like that you added different rhythm to some waves of grunts to make the game more challenging, the art is way better than the first one and is a good time killer.

The only thing I didn't like was the attack as I think it should have a delay as you can just spam the spacebar and hit all the grunts easily which hurts the gameplay.

make it where it shows your points when you lost. and rest of the game is good