The Breakdance spin is an attack used by Octohead in C2: Judgement Clay. He spins on his face and delivers several hits. Just in case you don't know what that is, it's where you take your thumb, put it on the forward or backward directional button, then slide it to the other side while touching the down direction, creating a half circle (hence the title). For this move, you have to press forward, than half circle to back and kick (any strength will do) to use it.
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