Complete the following achievements to unlock Xbox Live Gamerscore points.

Reporting for Duty (25 points): Kill 250 enemies.

More Than Enough (50 points): Kill 500 enemies.

Tough Guy (75 points): Kill 750 enemies.

Sprint to the Finish (20 points): Complete a mission below the target time.

Minuteman Medal (50 points): Complete all missions below the target time.

Overachiever (50 points): Complete a mission below the target time and completed all the bonus objectives.

Sniper (5 points): Killed 75 enemies with head shots.

Close Combat (20 points): Kill 25 enemies using melee attacks.

Raining Grenades (20 points): Kill 50 enemies using grenades.

Quick Draw (20 points): Kill 50 enemies using sidearms.

Cannons Away (20 points): Kill 25 enemies using cannons.

Gat-slinger (20 points): Kill 50 enemies using Gatling Guns.

Demolitions (50 points): Shoot all explosive barrels in every mission.

Marksman (10 points): Complete a mission with over 75% accuracy.

Bullseye (30 points): Complete a mission with over 95% accuracy.

Pioneer (10 points): Earn the rank of Pioneer.

Corporal (15 points): Earn the rank of Corporal.

Sergeant (20 points): Earn the rank of Sergeant.

Lieutenant (25 points): Earn the rank of Lieutenant.

Captain (30 points): Earn the rank of Captain.

Major (35 points): Earn the rank of Major.

Colonel (40 points): Earn the rank of Colonel.

General (50 points): Earn the rank of General.

Attention to Detail (5 points): Complete one bonus objective.

To the Letter (40 points): Complete all bonus objectives.

Chancellorsville (10 points): Complete the Dawn at Chancellorsville mission.

Cold Harbor (10 points): Complete Dr.Gatling`s Secret Weapon mission.

Hampshire (10 points): Complete The Gray Ghost mission.

Gettysburg (10 points): Complete the Sharpshooters at Devil`s Den mission.

Martinsburg (10 points): Complete The Great Train Raid of 1861 mission.

Grand Gulf (10 points): Complete the USS Pittsburgh mission.

Jackson (10 points): Complete the Infiltration of Jackson mission.

Lynchburg (10 points): Complete the Sabotage at Lynchburg mission.

Vicksburg (10 points): Complete the Captain Blazer`s Scouts mission.

Vicksburg Gate (10 points): Complete The Fall of Vicksburg mission.

Ironclad (10 points): Complete the Siege of Vicksburg mission.

War Survivor (20 points): Complete the game on the easiest difficulty setting (or higher).

War Veteran (40 points): Complete the game on the medium difficulty setting (or higher).

War Hero (75 points): Complete the game on the hardest difficulty setting.

Additionally there is one secret achievement.

Smell the Roses (20 points): Completed a mission on land without running.

To get a scoped rifle on the first mission, go to the barn where you will see a lot of ammunition. Walk around and you will be asked if you want to swap for the scoped rifle. Take the scoped rifle and get all the ammunition desired. If you run out of ammunition, go back to the barn and get more. The ammunition is unlimited at the barn.
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