Save the earth by gaining 3000+ earth health?
gain earth health by getting 5,15,25,35,45 and 55 kill combos?
ship health ? 8 kill combo
RF (rapid fire) ? 14 kill combo
ENP (Enemy neutralizing pulse) ? 18 kill combo
Controls:
Left Arrow or A Key ? Move Left
Right Arrow or D Key ? Move Right
Up Arrow or W Key ? Activate RF
Down Arrow or S Key ? Activate ENP
