Totally fun! The sound worked great in this game. Its one of those games where you play it and the sound is teasing you because its calm but you have to be on edge. lol. I loved it. This is the kidn of game where you would benefit from having hundreds of levels, reusing the same assets, having a different sound track for each group of levels(like world 1, world 2, world 3... each with several levels in it like world 1 -level 1 and world 1 level 1...). Since game play is fast, players would also probably find it fun to have a set of collectibles on each level(like stars or something) or a timer that shows if they reached a certain rank by finishing fast enough. Either way, games like this do really really well when you lean into things like level replayability instead of game replayability - meaning give them a reason to say "Darn it! I finished the level but I didnt get everything so I gotta go back and try to get a better score!!! Ah! That level was too hard!"

I have feedback though...

• I think I would add a delay and animation to the shooting of a bullet each time - death seemed so quick that while movement was fast, I never saw bullets coming if I was even close to the guards.
• Center camera if character stops moving - the camera only moved when the player reached close to the dge of the screen - but with bullets firing very fast, you cannot plan out your next move.
• I think attacks COULD also shoot a shuriken - I tried the hold game and only hit a cop with my sword once out of 25 play-throughs - cops kills me everytime I tried in an instant.
• Wall jump! You have a ninja, wall jump is a popular feature, if you can put in a wall jump, I seriously think it would be a game-changer when it comes to how people feel about your game.

Overall, fun game! Addictinggames.com vibes! :D