No missable achievements (plus 15 unknown)
Sign in with Steam or Xbox to track your progress, and:
Defend the outpost in mision "Outpost Invasion".
Buy 5 upgrades for the helicopters.
Blast the bridge in mission "Bridge Destruction".
Kill 1000 mutants.
Destroy 100 buildings and fortifications.
Destroy 300 tanks.
Destroy 500 armed pickups.
Destroy the enemy base in mission "Frontline Assault".
Successfully support the allied retreating troops in mission "Convoy Support".
Destroy the enemy troops and positions in the "Volcanic Island" mission.
Succesfully protect both temples in the "Ancient Ruins" mission.
Protect the camp for few minutes in mission "Camp Defence".
Fire a total of 2000 rockets.
Complete all missions of the game.
Have the helicopter shot down 10 times.