Kill 20 enemies with grab

Customize a weapon to use all 5 modification points

Perform 5 consecutive kills without being spotted by an enemy

Complete the game on any difficulty

Defeat the flight deck invader

Help the marines evacuate

Escape the mysterious structure under the mountain

Enter the mines

Kill 400 enemies

Secure the train station

Destroy 5 enemy tanks

Destroy all AA guns around the harbor

Destroy 5 helicopters