Well i like keeping the colors simple and calm for the eyes. And the fat outline is because this game is also for mobile, so when scaled down it wont lose detail :)

Those punch are quite good, nice animation.

 that's right, vector style, of course is pixel art but is like vector because you used plain color and plain shadows, one level of shadow in fact, also you used a fat outline, very common in vector images, I am not saying that is a bad thing, just I don't like it.  

Alright thanks, i will try and see if i manage to make it look good!

Great! It looks like he hits hard, something a lot of beat-em-ups don't do well. I would add a little bit of blur coming from his shoe in the kicking animation as well, since without it it looks weaker compared to the punches.

vector style? whats that? :D its all pixels

 I like it, I´m not fan of vector style but I like it.

smooth animation, but on the running animation the chest is a bit too static IMO

Animation is very nice

Awesome, very nice animation and clean pixels.