Get More Credits in Story Mode
     Simply  lose  all your credits, and an extra one will be added to
your  beginning  amount  the  next time you play. After you accumulate
over nine credits, the game will switch to Free Play.

Get Wide Ammo
     Complete the Story Mode using Infinite Ammo.

Infinite Ammo
     Complete Story Mode using the Automatic Weapon.

Unlock Automatic Weapon
     Beat the Story Mode twice.

Unlock Crisis Mission
     Beat Story Mode one time.

Unlock Extra Mode in Shoot Away 2
     Attain the high score in Retro Mode of Shoot Away 2.

Unlock Mirror Mode
     Finish Story Mode using only one credit.

Unlock Music Player
     Beat the final mission of the Crisis Mission mode.