Medal of Honor

Cheat codes:
Boat level DASBOOT

Multiplayer characters:
Noah BEACHBALL
Otto HERRZOMBIE
Kurt and Rosi SMPSMDMILK
Felix HOODDOWN
Gunther GUNTHER

Hints:
Take careful aim and go for head shots when you can. Don't forget that grenades can do the trick when firearms can't. A stealthy approach is best. Remember, you have a huge advantage if you see the enemy first.

I'm not sure if the cheats are the same in the NTSC version, but in the PAL version, enter the code SMPSMDMILK, and the thing will flash green. Now, type in URLINGAMBE to unlock everything.

To get the extra two levels in multiplayer you just have to complete the three first with three stars.

Cheat codes:
Unlimited ammunition BADCOPSHOW
Rapid fire ICOSIDODEC
Reflecting shots GOBLUE
Multiplay power-ups DENNISMODE
Wire frame mode TRACERON
American movie mode SPRECHEN
Captain Dye mode CAPTAINDYE
Audie Murphy mode MOSTMEDALS
Development team pic DWIMOHTEAM
AJ pic AJRULES
Girl pic COOLCHICK

Multiplayer characters:
Winston Churchill FINESTHOUR
Velociraptor SSPIELBERG
William Shakespeare PAYBACK
Bismark The Dog WOOFWOOF
Werner Von Braun ROCKETMAN
Wolfgang HOODUP
Evil Colonel Muller BIGFATMAN

Unlock "Making of..." feature:
Level 1 INVASION
Level 2 BIGGRETA
Level 3 DASBOOT
Level 4 STUKA
Level 5 KOMET
Level 6 TWOSIXTWO
Level 7 MISSLEAGUE
Level 8 VICTORYDAY

Kill Yourself:
Press R1, R2, L2, R1, R1, R1, R2, L2, L1, L1 then press Square quickly. Your player should blow up and say, "What did you do that for?"