The King of Fighters XII Cheats - Xbox 360

Achievements
Complete each achievement to get the allotted gamerscore:

Rank A (35) - Achieved Rank A in Online Mode.
Rank B (30) - Achieved Rank B in Online Mode.
Rank C (25) - Achieved Rank C in Online Mode.
Rank D (20) - Achieved Rank D in Online Mode.
Rank E (15) - Achieved Rank E in Online Mode.
Rank F (10) - Achieved Rank F in Online Mode.
Rank S (40) - Achieved Rank S in Online Mode.
Rank SS (45) - Achieved Rank SS in Online Mode.
Rank SSS (50) - Achieved Rank SSS in Online Mode.
Bull Fighter (15) - Inflict critical counter-attack damage at least 10 times in Versus Mode or Online Mode.
Cannonball (30) - Try to clear Arcade Mode within 6 minutes.
Human Weapon (10) - KO'ed every character in Arcade Mode using Andy Bogard.
Invincible Dragon (10) - KO'ed every character in Arcade Mode using Ryo Sakazaki.
King of Fighters (50) - KO'ed every character in Arcade Mode using all of the characters
Champ (30) - Compete in 100 or more battles in Online Mode.
Conductor of Brilliance (10) - KO'ed every character in Arcade Mode using Elizabeth Branctorche.
Conqueror (15) - Cleared Arcade Mode without using CONTINUE.
Crown Jewel of Taekwondo (10) - KO'ed every character in Arcade Mode using Kim Kaphawn.
Cruel Beauty (10) - KO'ed every character in Arcade Mode using Mature.
Drunken Fist Master (10) - KO'ed every character in Arcade Mode using Chin Gentsai.
Gladiator (20) - Win 25 or more battles in Online Mode.
Hero (30) - Win 50 or more battles in Online Mode.
Legend (50) - Win 100 or more battles in Online Mode.
Shanghai's God of War (10) - KO'ed every character in Arcade Mode using Shen Woo.
Shooting Star (10) - KO'ed every character in Arcade Mode using Benimaru Nikaido.
Silent Assassin (10) - KO'ed every character in Arcade Mode using Duo Lon.
Legendary Wolf (10) - KO'ed every character in Arcade Mode using Terry Bogard.
Lightning (40) - Try to clear Arcade Mode within 4 minutes.
Master (50) - Compete in 300 or more battles in Online Mode.
One-Man Army (10) - KO'ed every character in Arcade Mode using Ralf Jones.
Out-of-control Tank (10) - KO'ed every character in Arcade Mode using Raiden.
Psychic-Powered Idol (10) - KO'ed every character in Arcade Mode using Athena Asamiya.
Razor Edge (30) - Execute a counter-attack at least 50 times in Versus Mode or Online Mode.
Rising Storm (10) - KO'ed every character in Arcade Mode using Goro Daimon.
Rookie (10) - Compete in 10 or more battles in Online Mode.
Scion of the Flame (10) - KO'ed every character in Arcade Mode using Kyo Kusanagi.
Speed King (50) - Try to clear Arcade Mode in under 3 minutes and 30 seconds.
Speedster (20) - Try to clear Arcade Mode within 8 minutes.
Striker (10) - Execute a counter-attack at least 10 times in Versus Mode or Online Mode.
Silent Soldier (10) - KO'ed every character in Arcade Mode using Leona Heidern.
Slow Starter (10) - Try to clear Arcade Mode within 10 minutes.
Sneering Blaze (10) - KO'ed every character in Arcade Mode using Ash Crimson.
Sniper (20) - Execute a counter-attack at least 30 times in Versus Mode or Online Mode.
Strongest Tiger (10) - KO'ed every character in Arcade Mode using Robert Garcia.
Tough and Cool (10) - KO'ed every character in Arcade Mode using Clark Still.
Unbridled Instinct (10) - KO'ed every character in Arcade Mode using Iori Yagami.
Veteran (20) - Compete in 30 or more battles in Online Mode.
Warrior (10) - Win 5 or more battles in Online Mode.
Young Champ of Muay Thai (10) - KO'ed every character in Arcade Mode using Joe Higashi.
Young Rising Dragon (10) - KO'ed every character in Arcade Mode using Sie Kensou.

Unlock Art (Gallery Mode)
Play through arcade mode without losing a fight and you will unlock your character's respective artwork.