Upgrade the attack power of the super bomb to the maximum level

Upgrade the power of the super shot to the maximum level

Upgrade your shields to the maximum permanence level

Go through phase 7

Upgrade the power of normal cannons to the maximum level

Go through phase 5

Go through phase 4

Go through phase 3

Go through phase 1

Kill 12 enemies with a single laser beam in defense mode

Kill 8 zombies with a single sniper rifle bullet in defense mode

Kill 300 zombies with shotgun in a single game in defense mode

Score 1,000,000 points in defense mode