Here is the full list of all 23 Victory At Sea achievements.
Sink six combat ships in battle when commanding a single ship.
Earn five hundred million warbonds in a single campaign.
Capture an enemy operative.
Sink ships from each ship category.
Sink at least four enemies in combat with a fleet of submarines.
Sink one hundred ships in campaign mode.
Sink to the bottom of the sea.
Sink three combat ships in battle when commanding a single ship.
Sink twenty destroyers in campaign mode.
Capture an enemy captain.
Recover covert intelligence.
Earn one hundred million warbonds in a single campaign.
Capture fifty ports.
Complete the Atlantic campaign as USA or Britain.
Complete the Pacific campaign as USA or Britain.
Complete the Mediterranean campaign as USA or Britain.
Complete all the campaigns.
Win all the historical battles.
Own at least one ship of every category.
Complete the Atlantic Campaign as Germany.
Complete the Pacific Campaign as Japan.
Complete a campaign on Hard difficulty.
Complete a campaign on Expert difficulty.