Cool
By the way, don't be misled by the fact the Spike Ball is the starting weapon, it's quite good, with a 360% protected field. If I wield a Spike Ball and so does AI, I generally win. Therefore, feel free not to take any weapon upgrades. You might get something good (arms, bombs, miner, rockets if you know how to aim) but you might also get crap (rotating blocks thingy or, god forbid, THE SPIKE!)
Good game overall, challenging.