Use your saucer's Repulse-O-Tron to fend off homing missiles - Destroy All Humans!
Fully upgrade one of the branches of a weapon or ability - Destroy All Humans!
Transmogrify an object to replenish your ammunition - Destroy All Humans!
339/2,454255/1,00016/40
3,153/3,1531,000/1,00020/20
2,265/2,2651,000/1,00028/28