During your battle against the flying one eyed alien either use Oct Man, an octopus that fires bubbles that pop at the Alien. Or choose Alien Clops, a green alien that fires his own goo towards the enemy alien. You will gain coins while battling against the alien that you can use in the shop to buy health, Rapid fire, or Knockback bullets. Each will aid you to take down the flying alien. Don't fall off the edge of the map or you will fall to your death and loose coins and a life. Also don't get hit by the aliens fireballs or else you will get knocked backed and lose your coins. Always remember to have a super clash!