Mad Marine
Rescue the POWs twice.
30 
True Marine
Rescue the POWs in less than 10 minutes.
20 
Victory
Beat the Enemy Prison Camp.
20 
Knife Master
Complete all levels using only your knife and no powerups.
20 
Teamwork
Score 200,000 or more playing an Xbox Live co-op match.
20 
Bravery
Use only your knife to beat the Harbor Level.
15 
Stamina
Complete the Bridge Level.
15 
Stealth
Complete Missile Base, defeating less than 18 enemies.
15 
Reflexes
Complete the Missile Base without dying.
15 
Fair Fight
Reach the mortar without defeating any unarmed soldier in Missile Base.
10 
Good Start
Complete the Missile Base.
10 
Not Bad
Get a score of 50,000 or more.
10