Here is the full list of all 17 Civil War: 1862 achievements.
Kill an enemy General in a game versus the AI.
Destroy 3 enemies without a loss in a game versus the AI.
Destroy 8 enemies without a loss in a game versus the AI.
Destroy 12 enemies without a loss in a game versus the AI.
Complete 10 scenarios on Hard difficulty.
Complete 30 scenarios on Hard difficulty.
Complete Tutorial Campaign
Complete Fix Bayonets Campaign as CSA
Complete Fix Bayonets Campaign as US
Complete Steel and Thunder Campaign as CSA
Complete Steel and Thunder Campaign as US
Complete Colossus Campaign as CSA
Complete Colossus Campaign as US
Complete Fresh Troops Campaign as CSA
Complete Fresh Troops Campaign as US
Complete Death and Glory Campaign as CSA
Complete Death and Glory Campaign as US