Press Triangle, Square, Left, L1, Left, Circle at the "?" box inside the Krypt.
Alternately, get 50 Relic items in Konquest mode.
Daegon:
Press R1, L1, Triangle, Down(2), Square at the "?" box inside the Krypt.
Alternately, get 30 Relic items in Konquest mode.
Meat:
Press Up, Square(2), Circle(2), Up at the "?" box inside the Krypt.
Alternately, get 10 Relic items in Konquest mode.
Taven:
Press L2, Left, R1, Up, Circle, Down at the "?" box inside the Krypt.
You can also finish Konquest mode.
Drahmin's alternate costume:
Press L2, Right, X, R2, Up(2) at the "?" box inside the Krypt.
Frost's alternate costume:
Press Down, R2, R1, L1, Circle, L2 at the "?" box inside the Krypt.
Nitara's alternate costume:
Press Down, L1, Up, L1(2), Right at the "?" box inside the Krypt.
Shang Tsung's alternate costume :
Press L1, Left, Up, Circle, Up, L2 at the "?" box inside the Krypt.
Falling Cliffs arena:
Press R2, Circle, Square, X, Circle, Triangle at the "?" box inside the Krypt.
Alternately, defeat Drahmin in Konquest mode.
General Reiko's map room arena:
Press R2, Triangle, R1, Up, X(2) at the "?" box inside the Krypt.
Nethership Interior arena:
Press R1, Left(2), Down, L1, Square at the "?" box inside the Krypt.
Pryamis Of Argus arena:
Press R1, L1, Square, X, R2, Up at the "?" box inside the Krypt.
Alternately, Get 40 Relic items in Konquest mode.
Red Dawn arena:
Press Circle, L1, Up, Square, Circle, Down at the "?" box inside the Krypt.
Shinnok's Spire arena:
Press Left(2), Circle, Up, Triangle, L2 at the "?" box inside the Krypt.
Mortal Kombat: Armageddon promo movie:
Press Up(2), Down, Up, L1, X at the "?" box inside the Krypt.
Armory music:
Press X, Square, Left, Triangle, Square, X at the "?" box inside the Krypt.
Blaze concept art:
Press L1, Triangle, L2(2), R1, Square at the "?" box inside the Krypt.
Early Taven concept art:
Press Up, X, R2, Down, L2, X at the "?" box inside the Krypt.
Ed Boon concept art:
Press L1, Left, Up, Circle, R2, L1 at the "?" box inside the Krypt.
Firewall Arena concept art:
Press Up, Square, R1, L2, Circle, L1 at the "?" box inside the Krypt.
Mileena's car design concept art:
Press R2, Right, Up, R1, Triangle, Up at the "?" box inside the Krypt.
Pyramid concept art:
Press Triangle, Left(2), X, Down, Circle at the "?" box inside the Krypt.
Sektor's two handed pulse blade concept art:
Press R2, L1, Left, X, Up, R1 at the "?" box inside the Krypt.
Unused Konquest trap concept art:
Press Circle, R2, Triangle, Down, Circle, Left at the "?" box inside the Krypt.
Cyrax fatality blooper video:
Press Right, L1, R2, Down, Up, L1 at the "?" box inside the Krypt.
Motor game play movie:
Press Triangle, Up, R2, L1, R1, R2 at the "?" box inside the Krypt.
Lin Kuei Palace music:
Press L2, Left, Circle, X, R2, Right at the "?" box inside the Krypt.
Pyramid of Argus music:
Press Down, Left, R2, L2, Up, L1 at the "?" box inside the Krypt.
Tekunin Warship music:
Press Up, Circle, L1, R1(2), X at the "?" box inside the Krypt.
20,000 Koins:
Get 20 Relic items in Konquest mode.
Edenian Ruins arena:
Defeat the Giant Skulls in Edenia, then go up the path until all of the chests appear. Look inside second chest on the left to unlock the Edenian Ruins arena.
Scorpion's Lair arena:
Defeat the Giant Skulls in Edenia, then go up the path until all of the chests appear. Look inside third chest on the right to unlock the Scorpion's Lair arena.
How to beatBlaze:
Use Krate a fighter and these moves. Weapon Sword (for example: Ninja Sword), and these moves: Face Slash, Neck Thruster, Belly Splitter, Twisted Teal Secret, Chest Stab. All are stun and knock down moves. When fighting Blaze stick mostly with your weapon and these moves.