I actually like this game and where it is headed. I am also offering to help you out.
What I can do:
*Basic with coding in flash actionscript and other languages (but you probably know more actionscript than me)
*Art, weapons, other stuffs like logos and animated scenes maybe.
Link to my weapons and art HERE
*Story creator/writer if you don't already have one in mind
*Voice acting if you want
Suggestions for the game:
*Randomized hats and achievements (I think) are actually really good ideas.
*Animation for main character (I think you know this)
*Different maps/story mode
*Combos that increase money gained/points when executing
*Character customization
*Partly destructible background
Bug fixes needed:
*Enemies going outside of the map area so you cant hit them (especially slimes)
*Money system fixed
*Heavy attacks completely missing sometimes
Praise:
*I LOVE THE FREKIN MUSIC
*I actually like the tutorial and the kawaii punching bag
*Effects FTW
*MUSIC AGAIN FRICK YEAH
*Hitting and general gameplay
Thats about it.