Time Crisis 4

Completion bonuses
Successfully complete Arcade mode on the Normal difficulty setting to unlock infinite handgun ammunition, the Crisis missions, and Freeplay mode (no continues required). Successfully complete Arcade mode on the Normal difficulty setting twice to unlock infinite special weapon ammunition.

Music Player
Successfully complete the Crisis missions to unlock the Music Player.

Crisis Zone Shield
Successfully complete the Complete missions to unlock the Crisis Zone Shield. To activate the shield, rotate the Guncon 3 controller 90 degrees in either direction. Return the Guncon 3 to an upright position to put away the shield.

Alternate title screens
Successfully complete Arcade mode to unlock a title screen featuring Giorgio and Evan. Successfully complete the Crisis missions to unlock a title screen featuring Elizabeth Conway with a gun. Successfully complete the Complete missions to unlock a title screen featuring Captain Rush.

Extra continues
Intentionally fail the game in Story mode. You will receive more continues each time until they become unlimited.