Medal of Honor Heroes - Platform: Sony PSP Cheats: ------- Unlock Commander: Obtain STAFF SERGEANT Rank. Unlock German General Obtain SERGEANT Rank. Unlock German Gunner Obtain 1st CLASS SERGEANT Rank. Unlock Kriegsmarine Obtain SPECIALIST Rank. Unlock Navy Crewman Obtain CORPORAL Rank. Unlock Navy Gunner Kill 50 enemies in Campaign Mode. Unlock Secret Police Kill 150 enemies in Campaign Mode. Unlock Sergeant Complete Campaign Mode in VETERAN difficulty. Unlock Special Forces Kill 100 enemies in Campaign Mode. Unlock US Pilot Kill 75 enemies in Campaign Mode. Unlock Winter Infantry Kill 200 enemies in Campaign Mode.