Neo Contra cheats and cheat codes for Playstation 2

Extra lives:
Press Up, Up, Down, Down, L1, R1, L2, R2, L3, R3 at the title screen.

Music Box: Finish the game.
Gallery: Finish the game with an "A" rank.
Theater: Finish the game with a "B" rank.
Best Ending: Finish level 7.
Bill II and Jaguar II characters: Finish level 7 with an "S" rank.
Hidden FMV sequence: Finish level 7 with an "S" rank.
Level 6: Finish level 5 with an "A" rank.
Level 6 Training: Finish level 6.
Level 7: Finish level 6 with an "A" rank.
Level 7 Training: Finish level 7.
Weapon Set D: Finish level 5.
Weapon Set E: Finish level 6.
Weapon Set F: Finish level 7.