Army Of Two
All primary weapons
Successfully complete the game under the Recruit or Contractor difficulty setting to unlock the primary
weapons (assault rifles, shotguns, etc.).
All secondary weapons
Successfully complete the game under the Professional difficulty setting.
All basic weapons
Successfully complete the game under the Professional difficulty setting.
All other weapons
Successfully complete the game under the Operative difficulty setting.
Professional difficulty
Successfully complete the game under the Recruit or Contractor difficulty setting.
Defeating fully-armored enemies
Throw a grenade in front of your enemy to knock him down. Before he gets back up, either shoot him until he
is dead or have the grenade launcher as your frontmount and use one of them to take him out. Depending on
the area you are out will change the difficulty of doing this. Remember to use the aggro system to your
advantage.
China: Easy money
Start the China mission and complete the first objective for $30,000. After you have successfully completed
the objective, quit and reload the mission for another $30,000. You may have to walk back down the mountain
for the money to be given to you. This can be redone as many times as desired.
Surviving falls
After skipping a ladder and jumping too far above the ground, press [Roll] to take no damage.
Metal Gear Solid reference
The MSG-90 sniper rifle has a barrel type named "MGS Sniper-Wulf", which is a reference to the Sniper Wolf
Boss in Metal Gear Solid.
Drop your partner
When you are in an area that requires a step jump, have your partner help you up. Kill any nearby enemies
and offer to pull your partner. When he crouches down to jump, press Circle before he grabs on. He will fall
over as if he died, but will jump back up afterwards.
