How are you meant to really be "farming" points in this anyway? I've been playing it a bit now, and got up to like, stage 8 I think (1 continue thus far), and you really seem to earn really, really low amount of points with how much there is to unlock...
I also seem to really suck at this game, since I can only ever seem to be able to consistently do the Plasma Knuckle, and the slimes become a real issue. Or well, most enemies anyway, since I only have one attack I can really do with any level of reliability.