Get 1000 kills in one game
Get 10,000 kills
Get a score of 100k points in one game
Attain 1.5 million points
Get the triple barrel upgrade in singleplayer
Use the nuke power up 100 times
Get 1500 kills in one game
Get 2000 kills in one game
Get 15,000 kills
Get 25,000 kills
Get 35,000 kills
Get 45,000 kills
Get a score of 200k points in one game
Get a score of 300k points in one game
Get a score of 500k points in one game
Get a score of 1 million points in one game
Attain 3 million points
Attain 6 million points
Attain 9 million points
Attain 12 million points
Get the triple barrel upgrade 100 times
Use the freeze power up 100 times
Get the fire rate upgrade 100 times
Get the damage upgrade 4 times in one game
Use the health power up 8 times in one game
Get the level 3 shield upgrade
Get 200 kills with the supershot powerup in one game
Get 5000 kills with the supershot powerup
Get 5000 kills with the nuke powerup
Complete every challenge