Raiden IV : Overkill

					
Tricheurs :
Boss Rush mode opponents:

Defeat a Boss to unlock it in Boss Rush mode.
Gallery option:

Complete the second loop in any mode.
Free Play mode:

Successfully complete the game. Note: This must be repeated for

every game mode.
Stage select:

Successfully complete the game. Note: This must be repeated for

every game mode.
Weapon select:

Successfully complete the game. Note: This must be repeated for

every game mode.