Obtained a new medal in campaign mode after having already obtained 4 or more medals.

Completed all takeoffs, mid-air refuelings, and landings in each campaign mode mission.

Completed Mission 20 in campaign mode.

Completed Mission 18 in campaign mode.

Completed Mission 16 in campaign mode.

Using the photo hints, find 2 hidden items.

Defeat an enemy with a knife.

Defeat Stage 4 G with 4+ minutes left until detonation.

Complete Claire's story.

Complete Sherry's segment.

Escape from the sewers.

Escape the police station.

Shoot Tyrant's hat off his head.