I like the old flash game vibe !
It was very punk and fun.

With a bit more polishing, like for example increasing difficulty and escalating power-up power, and maybe even an actual ending (I could imagine it just escalating more and more, until all the police forces of Barcelona are just done), this could actually be a really addictive game. As it is, it is a fun diversion, and together with the music it is certifiably punk a.f. I like it a lot.

Simple, but entertaining enough. I found a spot I could stand without being attacked while being able to kill all enemies from the left with the bat and only having to use guns on the enemies from the right. Definitely would need some more polish and content for me to put time into it, but I can't say I didn't enjoy my time with it!

i like the fact that you chose upgrades and customize your playstyle

When I was young, there was a german anarchist flash game called "Labourday" around - iirc you also had to beat up cops and burn down cars, Its still online (but requires some sort of flash player) at:

http://tagderarbeit.extrajetzt.com/htm/game.htm

Your game goes a bit more into the direction of Hotline Miami. Still needs serious polishing in regards of gameplay to be fun.

man, am i bad at these kinds of games haha

still had a lot of fun though :)