Haha this is awesome! Loved becoming an absolute unit, I mean sure I was getting hit a lot, but, I couldn't resist. The concept of splitting up is really interesting, though I think perhaps rather than sort of being punished for splitting up (losing all rewards) there could be something else to it that makes it unique in it's own right (you know other than having two ships), perhaps each get half the damage and fire rate powerups you collected while big, perhaps you lose all those when you merge back up again. Overall, great work!