Full list of all 26 Call of Duty 3 achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox 360.
Complete the basic training in the beginning of Saint Lo.
Complete two missions as an American soldier.
Complete two missions as a British soldier.
Complete two missions as a Canadian soldier.
Complete two missions as a Polish soldier.
Complete the single player campaign on any difficulty setting.
Pick up and return 5 live grenades.
Complete a mission by firing only bolt action rifles. Melee attacks don't count.
Complete a mission by firing only assault rifles. Melee attacks don't count.
Complete a mission by firing only German weapons. Melee attacks don't count.
Die and retry 20 times during a mission.
Complete a mission without dying or using checkpoints.
Avoid getting hit more than 30 times during a mission.
Complete a mission using less than 300 rounds of ammunition.
EXTREME! Found a big jump and caught some air!
Complete a mission without firing a round. Player can make use of melee attacks and hand grenades.
Complete the Single Player Campaign on Veteran difficulty.
Supply ammunition to at least 20 friendly soldiers in a single ranked match. (Multiplayer)
Revive 10 of your teammates in a ranked match without getting a teamkill. (Multiplayer)
Capture the final objective in the game mode War. Must be a ranked match. (Multiplayer)
Be the player with the highest score and on the winning team in a ranked match. (Multiplayer)
Receive 200 total points in ranked matches. (Multiplayer)
Receive 2000 total points in ranked matches. (Multiplayer)
Receive 8000 total points in ranked matches. (Multiplayer)
Receive 20000 total points in ranked matches. (Multiplayer)
Receive 40000 total points in ranked matches. (Multiplayer)