This game needs a lot of work, having upgrade purchases based on your health makes grabbing health regen first a must, or you can't buy anything else. The pickup items do nothing for your health, I don't know why they even drop, going after them seems to have no benefit at all. All too often, enemies can spawn right on top of you and shred your health before you get the chance to move off of them. Enemies spawn much too fast considering how little health you'll have at the start, especially the shooting ones, the screen gets flooded with shots faster than your HP regenerates. Then we go into the weapons, you only get one? There's no point in buying more than one, you basically have to pick between rapid fire single, a triple shot, or a delayed 8 way burst. The weapons should have all combined together if you bought them all, rapid three way shots that burst out after they travel so far.