To get past the bosses and get good scores you really need to learn how to use the Mana pool. Pump it up whenever you can afford to, the earlier the better. Provided you havfe enough mana and don't need it for anything else, there is no penalty for letting a creep through.
Hmmm. Find it hard to target green because it's always chasing the crabs.
Instruction page is a rather unclear on how to generate the different colors.
Needs autofire.
Gets to fast/to quick.
Boss vanished and damage me before it had left the edge of the screen.
Need more gun modes - shotgun, bouncing shot, etc...
Not sure that bar at the botto is working. Shouldn't it be reacting to numbers I've entered? Also be nice if I could enter a nimber by clicking on it in the bar.