Unlock Special Weapons
Complete the following tasks to unlock the corresponding weapon.
Unlock Infinite Rocket Launcher:
Complete the game.
Unlock Chicago Typewriter:
Complete Separate Ways mode.
Earn a five star rank for each Mercenaries mode level.
Unlock P.are.L. 412:
Complete the game under the Professional difficulty.
Added by: Sanzano Sep 27th 2011, ID#7819