Great work! Getting a 4 player coop game in 64x64 pixels is an impressive feat in itself! Graphics looked great and you managed to get a lot of variety in. although I initially felt attacks were a little slow, I started to like the weighty feel of it the more I played.
Only real negative I have is that I didn't really understand the 3 bar system while I was playing, which led to me thinking the attack had bugged out sometimes (I guess it stamina?). I also had a few other bugs that came up. Understandable in a jam though.