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This was pretty flat, the gif shows some sick moves, but i got throug a couple of layers just spamming your basic attack (and getting Stylish rankings too), i can't put my finger on it, enemies are pretty docile, with the exception of those angel rainbow cube things, and the arenas are too small to get you to try a different approach, since the enemies keep coming from all sides.
Maybe crude graphics instead of placeholder cubes would make it read better.