Complete Mission 1-1: The Beachhead, in Campaign mode

Finish The Beachhead level with all sub-objectives completed, in Campaign mode

Finish The Beachhead level using only your primary loadout, and without using the Mounted Machine Gun, in any mode

Complete Mission 1-2: Deck Gunner, in Campaign mode

Finish Deck Gunner level without letting your health drop below 90%, in any mode

Complete Mission 1-3: Air Raid, in Campaign mode

Finish Air Raid level with all sub-objectives completed, in Campaign mode

Reach the bunker without triggering the sound alarm on Air Raid level, in any mode

Complete Mission 2-1: Defection, in Campaign mode

Finish Defection level with all sub-objectives completed, in Campaign mode

Reach Diesler's HQ without killing anyone or triggering the sound alarm on Defection level, in any mode

Complete Mission 2-2: Escape, in Campaign mode

Finish Escape level with all sub-objectives completed, in Campaign mode

Finish Escape level by killing all enemies and destroying all explosive barrels without dying, in any mode

Complete Mission 2-3: Covering Fire, in Campaign mode

Use a single grenade to destroy both the tank and the military vehicle at once on Covering Fire level, in any mode

Complete Mission 3-1: Break and Cover, in Campaign mode

Finish Break and Cover level with all sub-objectives completed, in Campaign mode

On Break and Cover, switch to the Pistol at the nearest loadout station after breaking through enemy lines, then finish the level using just the pistol, without using any secondary weapons or the Mounted Machine Gun, in any mode

Complete Mission 3-2: Unexpected Party, in Campaign mode

Finish Unexpected Party level without using any grenades, in any mode

Complete Mission 3-3: Stealing the Fire, in Campaign mode

Finish Stealing the Fire level with all sub-objectives completed, in Campaign mode

Finish Stealing the Fire level in under 3 minutes and 20 seconds, in any mode

Complete Mission 4-1: Tail Gunner, in Campaign mode

Finish Tail Gunner level with both ally bomber aircraft at above 90% health, in any mode

Complete Mission 4-2: Missing in Action, in Campaign mode

Finish Missing in Action level with all sub-objectives completed, in Campaign mode

On Missing in Action, kill the two guards near the first loadout station then switch to the M1 Garand Rifle and complete the level using just the rifle, without using the Mounted Machine Gun or the Tank, in any mode

Complete Mission 4-3: Lone Wolf, in Campaign mode

Finish Lone Wolf level with all sub-objectives completed, in Campaign mode

Finish Lone Wolf level without receiving damage, in any mode

Complete Mission 5-1: The Hunt, in Campaign mode

Finish The Hunt level with all sub-objectives completed, in Campaign mode

On The Hunt level, orchestrate a perfectly-timed chain reaction by using one grenade to ignite four explosive barrels and take out four enemies in the blast within 3 seconds of throwing it, in any mode

Complete Mission 5-2: Shoot Out, in Campaign mode

Finish Shoot Out level without letting your health drop below 50% and without picking up any health pack, in any mode

Complete Mission 5-3: End Game, in Campaign mode

Finish End Game level in under 1 minutes and 20 seconds, in any mode

Unlock Max-GI Mode by earning all Gold and Silver medals in the campaign

Survival Mode: Achieve and submit 100 kills without using the Mounted Machine Gun

Max-GI Mode: Complete all 5 Missions without dying or exiting to the main menu