Full list of all 40 History Civil War: Secret Missions achievements worth 1,000 gamerscore.
Kill 250 enemies.
Kill 500 enemies.
Kill 750 enemies.
Complete a mission on land without running.
Complete a mission below the target time.
Complete all missions below the target time.
Complete a mission below the target time and completed all the bonus objectives.
Killed 75 enemies with head shots.
Kill 25 enemies using melee attacks.
Kill 50 enemies using grenades.
Kill 50 enemies using sidearms.
Kill 25 enemies using cannons.
Kill 50 enemies using Gatling Guns.
Shoot all explosive barrels in every mission.
Complete a mission with over 75% accuracy.
Complete a mission with over 95% accurracy.
Earn the rank of Pioneer.
Earn the rank of Corporal.
Earn the rank of Sergeant.
Earn the rank of Lieutenant.
Earn the rank of Captain.
Earn the rank of Major.
Earn the rank of Colonel.
Earn the rank of General.
Complete one bonus objective.
Complete all bonus objectives.
Complete the Dawn at Chancellorsville mission.
Complete Dr.Gatling`s Secret Weapon mission.
Complete The Gray Ghost mission.
Complete the Sharpshooters at Devil`s Den mission.
Complete The Great Train Raid of 1861 mission.
Complete the USS Pittsburg mission.
Complete the Infiltration of Jackson mission.
Complete the Sabotage at Lynchburg mission.
Complete the Captain Blazer`s Scouts mission.
Complete The Fall of Vicksburg mission.
Complete the Siege of Vicksburg mission.
Complete the game on the easiest difficulty setting (or higher).
Complete the game on the medium difficulty setting (or higher).
Complete the game on the hardest difficulty setting.