Blaze:
Press Y, X, Left, R, Left, B at the "?" box inside the Krypt.

Daegon:
Press R, R, Y, Down, Down, X at the "?" box inside the Krypt.

Meat:
Press Up, X, X, B, B, Up at the "?" box inside the Krypt.

Taven:
Press R, Left, White, Up, B, Down at the "?" box inside the Krypt.

Drahmin's alternate costume:
Press White, Right, A, White, Up, Up at the "?" box inside the Krypt.

Frost's alternate costume:
Press Down, White, R, R, B, White at the "?" box inside the Krypt.

Nitara's alternate costume:
Press Down, R, Up, R, R, Right at the "?" box inside the Krypt.

Shang Tsung's alternate costume:
Press R, Left, Up, B, Up, White at the "?" box inside the Krypt.

Falling Cliffs arena:
Press White, B, X, A, B, Y at the "?" box inside the Krypt.

General Reiko's Map Room arena:
Press White, Y, R, Up, A, A at the "?" box inside the Krypt.

Nethership Interior arena:
Press R, Left, Left, Down, R, X at the "?" box inside the Krypt.

Pyramid Of Argus arena:
Press R, R, X, A, White, Up at the "?" box inside the Krypt.

Red Dawn Arena:
Press B, R, Up, X, B, Down at the "?" box inside the Krypt.

Shinnok's Spire arena:
Press Left, Left, B, Up, Y, R at the "?" box inside the Krypt.

Mortal Kombat: Armageddon promo movie:
Press Up, Up, Down, Up, White, A at the "?" box inside the Krypt.

Motor gameplay movie:
Press Y, Up, White, R, R, White at the "?" box inside the Krypt.

Armory music:
Press A, X, Left, Y, X, A at the "?" box inside the Krypt.

Lin Kuei Palace music:
Press White, Left, B, A, White, Right at the "?" box inside the Krypt.

Pyramid Of Argus music:
Press Down, Left, White, White, Up, R at the "?" box inside the Krypt.

Tekunin Warship music:
Press Up, B, R, R, R, A at the "?" box inside the Krypt.

Pyramid Of Argus concept art:
Press A, R, R, White, Up, Up at the "?" box inside the Krypt.

Pyramid Of Argus concept art:
Press Y, Left, Left, A, Down, B at the "?" box inside the Krypt.

Blaze concept art:
Press R, Y, White, White, R, X at the "?" box inside the Krypt.

Early Taven concept art:
Press Up, A, White, Down, White, A at the "?" box inside the Krypt.

Firewall arena concept art:
Press Up, X, R, White, B, R at the "?" box inside the Krypt.

Ed Boon concept art:
Press R, Left, Up, B, White, R at the "?" box inside the Krypt.

Mileena's car design concept art:
Press White, Right, Up, R, Y, Up at the "?" box inside the Krypt.

Sektor's Pulse Blade concept art:
Press White, R, Left, A, Up, R at the "?" box inside the Krypt.

Unused Konquest Trap concept art:
Press B, White, Y, Down, B, Left at the "?" box inside the Krypt.

Liu Kang Head Crusher Fatality:
Press Toward, Toward, B.