This looks like a very nicely made and polished game, the B/W color scheme is also good for this :) The sound design is also spectacular. But as many bellow me have already suggested, adding more extra things in the future like powerups, music related stuff and maybe something at the end of the level.

But, the way it is now is already really nice ^^

This is pretty good, the music gun and the black and white, love this
very well done

This game is really creative. I like the art and animation for this game, and the audio is really good. In my opinion, the enemies were a little too challenging, and could probably be taken down a notch. The programming for the Raiders attack and jump cycle is amazing. Overall a good game.

Really like the use of the guitar for all sound effects and nice desperado style music.
would like to see more levels, and maybe you collect notes when a bandit is killed to make a tune and end of level ?
but do understand it was a quick build for a game jam.
nice style to game as well, very gameboy like.
well done chief

PROS: Style, mechanics, originality, and yes, music. I wanted to pretend I was Antonio Banderas.

CONS: Repetitive. Sometimes the music FX during fights did get a little annoying.

I see that you made this game in a week, so there isn't much depth to the game. I suggest diving back in and adding more items, powerups, switches, keys, and all that other stuff kids like. Don't add color though. I think the B/W was a huge plus.