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