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