| Achievement | How to unlock
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| Admiral ( 80 points ) | Earn 130 stars.
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| Bay Hunter ( 20 points ) | Complete Bay of Biscay mission one in the Sentinel.
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| Baywatch ( 15 points ) | Complete the Bay of Biscay missions.
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| Big Fish in Little Pond ( 30 points ) | Complete North Sea mission one with the Stingray.
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| Caped Crusader ( 10 points ) | Complete Cape Farewell mission one in the Stingray.
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| Captain ( 40 points ) | Earn 110 stars.
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| Careful with that ( 20 points ) | Destroy all six guns in North Sea mission three.
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| Channel Defender ( 15 points ) | Complete English Channel mission two in the Patriot.
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| Clear the Channel ( 15 points ) | Complete the English Channel missions.
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| Commander ( 30 points ) | Earn 90 stars.
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| Deadeye ( 15 points ) | Shoot down eight fighters in Cape Farewell mission five.
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| Deadeye II ( 20 points ) | Shoot down twenty fighters in Bay of Biscay mission five.
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| Deadeye III ( 20 points ) | Shoot down twenty fighters in English Channel mission three.
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| Demolitionist ( 20 points ) | Destroy twenty mines in North Sea mission three.
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| Demolitionist II ( 15 points ) | Destroy twenty mines in Bay of Biscay mission two.
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| Ensign ( 10 points ) | Complete the tutorial mission.
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| Farewell to the Cape ( 15 points ) | Complete the Cape Farewell missions.
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| Hat Trick ( 20 points ) | Destroy three enemy subs in Bay of Biscay mission three.
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| Indomitable ( 20 points ) | Complete English Channel mission four taking thirty percent damage or less.
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| Intercept This! ( 30 points ) | Intercept 4 transmissions in a 3 minute game.
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| Invincible ( 15 points ) | Complete North Sea mission one without taking damage.
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| Ironclad ( 30 points ) | Complete US East Coast mission four taking twenty percent damage or less.
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| Legendary ( 1 points ) | Complete US East Coast mission five in the Sentinel.
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| Lieutenant ( 25 points ) | Earn 75 stars.
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| Making Friends ( 20 points ) | Win an online game.
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| Man the Decks ( 15 points ) | Complete North Sea mission one without using torpedoes.
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| Man the Decks II ( 30 points ) | Complete English Channel mission one without using torpedoes.
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| No Fish in the Tube ( 15 points ) | Complete Cape Farewell mission three without using the deck gun.
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| Northern Exposure ( 10 points ) | Complete the North Sea missions.
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| Outgunned ( 15 points ) | Complete North Sea mission four in the Victory.
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| Patriot Son ( 39 points ) | Complete US East Coast mission four without using torpedoes.
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| Ping ( 10 points ) | Complete an online game.
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| Privateer ( 15 points ) | Capture three ships in North Sea mission two.
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| Privateer II ( 10 points ) | Capture five ships in Cape Farewell mission two.
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| Privateer III ( 20 points ) | Capture seven ships in US East Coast mission two.
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| Save the World ( 50 points ) | Complete the game.
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| Shut Out ( 40 points ) | Win an online game to 3 points with all other players at zero.
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| Stay Wet ( 15 points ) | Complete North Sea mission two without surfacing.
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| Steady Shot ( 10 points ) | Complete the Prologue mission without hitting friendlies.
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| Steady shot II ( 20 points ) | Complete Bay of Biscay mission four without hitting friendlies.
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| Steady shot III ( 30 points ) | Complete US East Coast mission one without hitting friendlies.
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| Steel Sights ( 15 points ) | Shoot down ten bombers in North Sea mission five.
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| Steel Sights II ( 25 points ) | Shoot down ten bombers in English Channel mission five.
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| Thread the Needle ( 20 points ) | Complete North Sea mission three without hitting any mines.
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| Tough as Nails ( 15 points ) | Complete Cape Farewell mission four taking fifty percent damage or less.
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| Tube Trouble ( 30 points ) | Complete US East Coast mission three using eight or fewer torpedoes.
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