Ghost Recon 2 Cheats

Invincibility (self):
Select the "Enter Cheats" option at the main menu, then press B(2), X, A. Your first soldier will be invincible, but the remaining members of your platoon can still be harmed.

Invincibility (team):
Select the "Enter Cheats" option at the main menu, then press B(2), X, B.
User Cheat by Sammy

Refill ammunition:
Select the "Enter Cheats" option at the main menu, then press B(2), X(2).

Autowin:
Select the "Enter Cheats" option at the main menu, then press B(2), X, Y.

Medals:

Purple Heart: Get wounded or killed in action.
Bronze Star: Get 15 kills
Silver Star: Get 20 kills
Distinguished Service Cross: Get 25 kills
Congressional Medal Of Honor: Get 30 kills

Ghost Recon 2 Official Website

Ghost Recon 2 Review - GamesDomain

Ghost Recon 2 Review - IGN