Damn cool style. The look and feel is really great. This game shows how simplicity can be a design key .
When I captured the boss dude, no one shot at me. Don't know if it was a bug or a feature,...I'll count it as second ;)
This could easily become a real game, with some menus and more levels.
It's hard to find some points of improvement. But when there is a point, maybe the controls. I would rather stick to a Key for shooting instead of mousebutton or give the character the ability to shoot in the direction of the click. But thats complaining on a high level :D