Kill 300 enemies with pistols.
Kill 300 enemies with a shotgun.
Kill 300 enemies with a assault rifle/machine gun.
Kill 300 enemies with a rocket/grenade launcher.
Complete the game at an Easy difficulty level.
Complete the game at a Normal difficulty level.
Complete the game at a High difficulty level.
Materials collected: 50 000.
Materials collected: 100 000.
Materials collected: 150 000.
Survive for 12 minutes in "Stand Firm" mode.
Reach the 6th wave in "Stand Firm" mode.
Reach the 12th wave in "Stand Firm" mode.
Level your character up to the maximum.
Kill 10 000 enemies.
Kill 300 enemies with energy weapon.