TETSUYUKI
Clear MISSION 1
HAIRBUSTER RIBERTS
Clear MISSION 2
TANI OH
Clear MISSION 3
SHOE & KARN
Clear MISSION 4
IRON NOKANA
Clear MISSION 5
HI-DO
Clear FINAL MISSION
METAL SLUG ATTACK
Defeat a boss using the METAL SLUG ATTACK
TEAMWORK
Play in MULTIPLAYER
200 TOMBS
Kill 200 enemy soldiers
1,000 TOMBS
Kill 1,000 enemy soldiers
BOMBER
Throw 50 grenades
KING OF BOMBERS
Throw 200 grenades
RESCUE
Free 50 POWs
KING OF RESCUE
Free 100 POWs
MISSION ALL COMPLETE
Clear the game using no continue