Earn 5,000 points
Earn 10,000 points
Earn 15,000 points
Earn 20,000 points
Earn 50,000 points
Earn 100,000 points
Kill the first alien
Kill 50 aliens
Kill 100 aliens
Kill 300 aliens
Kill 500 aliens
Kill 1000 aliens
Earn 1,000,000 points
Earn 250,000 points
Earn 500,000 points
Earn 750,000 points
Kill 5,000 aliens
Kill 25,000 aliens
Kill 50,000 aliens
Kill 100,000 aliens
Kill 1,000,000 aliens
Collect the first ammo box
Collect 50 ammo boxes
Collect 100 ammo boxes
Collect 500 ammo boxes
Collect 5000 ammo boxes
Release the first combatant
One more for the team
Target in sight
Complete troop
The last of the Mohicans