Alien Invasion

Champion

Reach 1st place on the leaderboard

Top Three

Reach 3rd place or higher on the leaderboard.

Top Five

Reach 5th place or higher on the leaderboard

Top Eight

Reach any place on the leaderboard

U.F.O Destroyer

Destroy 1 U.F.O

Great U.F.O Destroyer

Destroy 10 U.F.O's in a playthrough