Reach 500 points without missing a single shot
Kill 20 enemies in rapid succession
Kill 30 enemies with a single mega laser
Detonate 30 bombs with a single shot
Kill an enemy with a deflected bullet
Kill 1000 asteroids
Kill 1000 UFOs
Have 50 asteroids in the level at the same time
Reach 1000 points without moving
Reach 2000 points in arcade mode
Reach 4000 points in arcade mode
Reach 6000 points in arcade mode
Complete all challenges in a single player mode
Complete all challenges in coop mode
Survive for 180 seconds
Resurrect an ally in coop mode
81680
1022
431
8732
31
54
6868
1397
441
26