Ghost Recon: Island Thunder

Chicken explosives:
Complete Campaign Mission 8 in Firefight mode under the Veteran difficulty setting. You must use a full team and none of your teammates may die.

High pitched voices:
Complete Campaign Mission 4 in Defend mode under the Veteran difficulty setting using only one soldier.

Big heads:
Complete Campaign Mission 7 in Defend mode under the Recruit difficulty setting. You must use a full team and none of your teammates may die.

Paper mode:
Complete Campaign Mission 6 in Firefight mode under the Veteran difficulty setting using only one support soldier.

Run fast mode:
Complete Campaign Mission 1 in Recon mode under the Elite difficulty setting using a full team.

Slow motion:
Complete Campaign Mission 5 in Recon Mode under the Elite difficulty setting using only one soldier.

Bonus characters:
Complete the following tasks to unlock the corresponding character.

A. Galinsky: Complete Special Objective in Campaign Mission 1 under the Recruit difficulty setting during a Quick Mission in Mission mode.

B. Gordon: Complete Special Objective in Campaign Mission 6 under any difficulty setting.

D. Munz: Complete Special Objective in Campaign Mission 2 under the Veteran difficulty setting during a Quick Mission in Mission mode.

G. Osadze: Complete Special Objective in Campaign Mission 5 under the Veteran difficulty setting during a Quick Mission in Mission mode.

H. Ramirez: Complete Special Objective in Campaign Mission 2 under any difficulty setting.

J. Stone: Complete Special Objective in Campaign Mission 4 under any difficulty setting.

K. Henkel: Complete Special Objective in Campaign Mission 3 under any difficulty setting.

N. Tunny: Complete Special Objective in Campaign Mission 3 under the Elite difficulty setting during a Quick Mission in Mission mode.

S. Grey: Complete Special Objective in Campaign Mission 5 under any difficulty setting.

S. Ibrahim: Complete Special Objective in Campaign Mission 6 under the Elite difficulty setting during a Quick Mission in Mission mode.

W. Jacobs: Complete Special Objective in Campaign Mission 1 under any difficulty setting.

Hint: Cycle back through weapons:
To move back through the weapon selections, press Triangle.
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Hint: Single mission objective 17, Swamp Airfield:
Every time you kill a group of enemies, save the game. When you get killed, load the saved game and kill the person that got you.

Hint: Dossier 17:
To easily complete this dossier (swap airfield defend) on veteran, at the start of the mission run directly to the fence nearby, which should be northeast. Once behind the fence, crouch down and wait for the enemy to run around the fence and shoot them. They will not see you until you fire. No enemies will run at you from behind or from behind the ammo dump building, so you have nothing to worry about.
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Hint: Boost stats:
Start a private game in cooperative mode. Play the game on the elite difficulty setting with unlimited respawns and grenades. You will get a win and 45 kills easily.

Hint: Monkey hit by car:
In the plantation level, go to the road and follow it until you get to a gate that blocks it off. Look at the ground to see a monkey that has been hit by a car.