Here is the full list of all 28 Civil War: 1864 achievements.
Destroy 1 Confederate Artillery Gun.
Destroy 5 Confederate Artillery Guns.
Destroy 10 Confederate Artillery Guns.
Destroy 1 Union Artillery Gun.
Destroy 5 Union Artillery Guns.
Destroy 10 Union Artillery Guns.
Destroy 3 enemy units in a row without losing any of your own.
Destroy 8 enemy units in a row without losing any of your own.
Destroy 12 enemy units in a row without losing any of your own.
Complete 5 scenarios on Hard difficulty.
Complete 10 scenarios on Hard difficulty.
Complete 15 scenarios on Hard difficulty.
Complete 20 scenarios on Hard difficulty.
Complete 30 scenarios on Hard difficulty.
Complete 50 scenarios on Hard difficulty.
Complete the tutorial.
Complete the Division Campaign as Union.
Complete the Division Campaign as Confederate.
Complete the Cold Steel Campaign as Union.
Complete the Cold Steel Campaign as Confederate.
Complete the Duty and Pride Campaign as Union.
Complete the Duty and Pride Campaign as Confederate.
Complete the Blockade Campaign as Union.
Complete the Blockade Campaign as Confederate.
Complete the Freedom Calls Campaign as Union
Complete the Freedom Calls Campaign as Confederate.
Complete the Road to Atlanta Campaign as Union.
Complete the Road to Atlanta Campaign as Confederate.