Am I the only one having serious trouble with the red enemies that fly at you all the time?
If I don't have any upgrades to hit behind me I simply have to circle around the full screen to simply evade them, getting 1 or 2 shots on a random one of them each time I'm below them. This isn't enough damage to kill them and multiple waves of new enemies spawn before I even have 1 down.
Usually I die because the game gives me 3 waves of these in a row filling the screen with "you can't be here" or new enemies spawn right on my face when I'm at the top trying to lure them up again.
Any tips for fighting these without homing missiles (since you don't always get the right upgrades to make them easier)