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