Well it was almost fun :\
yea everybody here is right, i was enjoying for the most part when it was the circles, and i realized that they in fact drop the ammo, i thought well this isn't that bad, maby just more come. then the squares came and it took more ammo to kill them, that's where the trouble began. only got worse from there, i mean at least add a slow ammo Regen when you hit 0 or something. shouldn't be just empty clip and die. potential but lost :\