THIS IS AWESOME! :D I love this kind of games, i really want Story Mode, and upgrades, some kind of special moves would be great too :D And its hard, if enemies would start come in slow waves and then got harder and harder it would be better =)
I think something like HP bar would be good. And something special abilities, if you avoid enough blocks, like 5, 10 seconds immortality and like that.
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 "Ninja Slash"){kind=icon}
 "Gamed Salad"){kind=icon}
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