Defeat all 40 levels

Defeat a stealth mission without being detected in areas 2, 3, 4 and 5 (Grasslands, Ocean, City and Badlands)

Destroy all enemies in a stealth mission in areas 4 and 5 (City and Badlands)

Defeat a mission without dying in areas 3, 4 and 5 (Ocean, City and Badlands)

Defeat a mission without being injured in areas 2, 3, 4 and 5 (Grasslands, Ocean, City and Badlands)

Earn 3 stars after defeating a mission in areas 3, 4 and 5 (Ocean, City and Badlands)

Destroy every single enemy in a mission in areas 3, 4 and 5 (Ocean, City and Badlands)

Defeat all 40 levels in Hard difficulty

Defeat all 40 levels in Impossible difficulty

Save all the bonus people in a level in areas 2, 3, 4 and 5 (Grasslands, Ocean, City and Badlands)

With Friendly-Fire enabled, defeat a mission without killing each other in areas 2, 3, 4 and 5 (Grasslands, Ocean, City and Badlands)

Achieve all other achievements

Defeat the base of operations in the mountains

Defeat the base of operations in the grasslands

Defeat the base of operations on the ocean

Defeat the base of operations in the city

Defeat the base of operations in the badlands

Achieve all other achievements (excluding Super Skilled and Ultra Expert)