Kill 400 enemies
Kill 300 enemies
Collect 40 pickups
Collect 30 pickups
Beat highscore of 80,000
Deploy 5 overloads
Kill 4 bosses
Deploy 3 overloads
Kill 2 bosses
Beat highscore of 40,000
Kill 1 boss
Deploy 1 overload
Lose 18 ships
Kill 180 enemies
Collect 20 pickups
Lose 9 ships
Kill 90 enemies
Collect 10 pickups
Beat highscore of 20,000
Lose 3 ships
Kill 30 enemies
Collect 5 pickups
Kill 6 bosses