King Of Fighters 2006

Note: This game is titled King of Fighters: Maximum Impact 2 in Japan.

Bonus characters:
Successfully complete the game the indicated number of times with a different character each time to unlock the corresponding fighter.
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Armor Ralf: 11 times
B. Jenet: 5 times
Classic Kyo Kusanagi: 9 times
Fio: 3 times
Hanzo Hattori: 4 times
Hyena: 13 times
Jivatma: 14 times
Kim Kaphwan: 1 time
Lilly Kane: 8 times
Mr Karate: 12 times
Nightmare Geese: 6 times
Ninon Beart: 7 times
Richard Myer: twice
Wild Wold (MOTW Terry): 10 times

Sound test:
Win stage 60 in Quest Survival mode.

Hard mode:
Complete all ten levels of the Easy missions to unlock the Hard missions.

Alternate costumes:
Colors E, F, G, and H can be unlocked for a characters "Normal" and "Another" costumes by completing Story mode, completing a Challenge mode mission, Completing Time Attack mode, or by progressing through the Quest Survival stages.

Bonus stages:
Complete the indicated task to unlock the corresponding bonus stage:

Stage 1: Complete story mode.
Stage 2: Complete the first 50 easy difficulty missions.
Stage 3: Complete the last 50 easy difficulty missions.
Stage 4: Complete the first 50 hard difficulty missions.
Stage 5: Complete the last 50 hard difficulty missions.
Stage 6: Complete stage 60 in Quest Survival mode.
Stage 7: Complete stage 120 in Quest Survival mode.
Stage 8: Complete stage 180 in Quest Survival mode.