Kill 100 enemies by rockets
Kill 1000 enemies by rockets
Destroy 1st Boss
Complete 15 deathmatches
Complete 9 deathmatches
Destroy 2nd Boss
Kill 100 enemies by ram
Destroy 3rd Boss
Destroy 4th Boss
Kill 10 enemies by ram
Collect 10000 coins
Destroy 5th Boss
Perform 5 flips
Win "Defender"
Purchase 72 upgrades
Perform 50 flips
Purchase 10 upgrades
Purchase 34 upgrades