Achievements...
	Scoped rifle...

Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Attention to Detail ( 5 points )	Complete one bonus objective.
Bullseye ( 30 points )	Complete a mission with over 95% accuracy.
Cannons Away ( 20 points )	Kill 25 enemies using cannons.
Captain ( 30 points )	Earn the rank of Captain.
Chancellorsville ( 10 points )	Complete the Dawn at Chancellorsville mission.
Close Combat ( 20 points )	Kill 25 enemies using melee attacks.
Cold Harbor ( 10 points )	Complete Dr.Gatling`s Secret Weapon mission.
Colonel ( 40 points )	Earn the rank of Colonel.
Corporal ( 15 points )	Earn the rank of Corporal.
Demolitions ( 50 points )	Shoot all explosive barrels in every mission.
Gat-slinger ( 20 points )	Kill 50 enemies using Gatling Guns.
General ( 50 points )	Earn the rank of General.
Gettysburg ( 10 points )	Complete the Sharpshooters at Devil`s Den mission.
Grand Gulf ( 10 points )	Complete the USS Pittsburgh mission.
Hampshire ( 10 points )	Complete The Gray Ghost mission.
Ironclad ( 10 points )	Complete the Siege of Vicksburg mission.
Jackson ( 10 points )	Complete the Infiltration of Jackson mission.
Lieutenant ( 25 points )	Earn the rank of Lieutenant.
Lynchburg ( 10 points )	Complete the Sabotage at Lynchburg mission.
Major ( 35 points )	Earn the rank of Major.
Marksman ( 10 points )	Complete a mission with over 75% accuracy.
Martinsburg ( 10 points )	Complete The Great Train Raid of 1861 mission.
Minuteman Medal ( 50 points )	Complete all missions below the target time.
More Than Enough ( 50 points )	Kill 500 enemies.
Overachiever ( 50 points )	Complete a mission below the target time and completed all the bonus objectives.
Pioneer ( 10 points )	Earn the rank of Pioneer.
Quick Draw ( 20 points )	Kill 50 enemies using sidearms.
Raining Grenades ( 20 points )	Kill 50 enemies using grenades.
Reporting for Duty ( 25 points )	Kill 250 enemies.
Sergeant ( 20 points )	Earn the rank of Sergeant.
Smell the Roses ( 20 points )	Completed a mission on land without running.
Sniper ( 5 points )	Killed 75 enemies with head shots.
Sprint to the Finish ( 20 points )	Complete a mission below the target time.
To the Letter ( 40 points )	Complete all bonus objectives.
Tough Guy ( 75 points )	Kill 750 enemies.
Vicksburg ( 10 points )	Complete the Captain Blazer`s Scouts mission.
Vicksburg Gate ( 10 points )	Complete The Fall of Vicksburg mission.
War Hero ( 75 points )	Complete the game on the hardest difficulty setting.
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).

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.