Get a highscore of 300 or higher on Stage 1. (Single Player)
Annihilate 1 enemy. (Single Player)
Get a "Perfect" rating on Stage 1. (Survive all 10 waves without losing any base health)
Use an Upgraded Spike Strip Item. (Single Player)
Use an Auto Turret item. (Single Player)
Use a Spike Strip Item. (Single Player)
Kill an enemy with an upgraded bullet. (Single Player)
Grab a damage buff. (Single Player)
Grab a speed buff. (Single Player)
Kill 20 enemies in a row without missing a shot. (Single Player)
Grab a health buff. (Single Player)
Kill 10 enemies in a row without missing a shot. (Single Player)
Kill an enemy with a laser bullet. (Single Player)
Collect all the trophies in Annihilation.
Use an Upgraded Auto Turret item. (Single Player)
Purchase the extra pistol upgrade. (Single Player)
Get a "Perfect" rating on Stage 2. (Survive all 10 waves without losing any base health)
Have more than $2,500 at one time. (Single Player)
Kill an enemy by running into it. (Single Player)
Get a highscore of 1150 or higher on Stage 2. (Single Player)
Get a highscore of 850 or higher on Stage 3. (Single Player)
Get a "Perfect" rating on Stage 3. (Survive all 10 waves without losing any base health)
Kill 40 enemies in a row without missing a shot. (Single Player)
Annihilate 500 enemies. (Single Player)
Annihilate 1000 enemies. (Single Player)
