Solar System Defense

I've never seen a game with so many bugs in my life. I'm asking the developers to add an HP reset trigger at the start of the level (off-screen), or to make it so that if an object's radius extends beyond the screen, it won't work unless at least 20% of the alien ship is on-screen. Thanks :) ...Otherwise, I managed to get through the whole thing, both using the bugs and without them :P