Navy Cross
Completed the game on Admiral Difficulty.
100 
Earth's Hero
Completed the game on any Difficulty.
60 
Navy Distinguished Service
Completed the game on Captain Difficulty or higher.
60 
Rain of Fire
Downed 200 enemies with artillery support calls.
50 
No Man Left Behind
Completed "They're Back!" on any Difficulty.
40 
Escort
Completed "Retaliation" on any Difficulty.
40 
The Bigger They Are...
Completed "End Game" on any Difficulty.
40 
Welcome to the Islands
Completed "The Arrival" on any Difficulty.
30 
Fish In A Barrel
Downed 40 enemies that are stunned by the LRAD.
30 
The Dome
Completed "Construction" on any Difficulty.
30 
Quick Draw
Downed 40 enemies with the Pistol.
30 
Lawnmower
Downed 40 enemies with the KRAW.
30 
Sharp Shooter
Downed 40 enemies with the Carbine.
30 
Up Close and Personal
Downed 40 enemies with the Shotgun.
30 
High Velocity
Downed 40 enemies with the Alien Railgun.
30 
Oliver Hazard Perry
Destroyed 10 enemy ships with the USS Chesapeake.
30 
Arleigh Burke
Destroyed 20 enemy ships with the USS John Quincy Adams.
30 
Los Angeles
Destroyed 20 enemy ships with the USS Laredo.
30 
Ticonderoga
Destroyed 20 enemy ships with the USS Yukon.
30 
Infestation
Completed "Overrun" on any Difficulty.
30 
Iowa
Destroyed 20 enemy ships with the USS Missouri.
30 
Mighty Mo
Completed "The Big Guns" on any Difficulty.
30 
Officer of the Deck
Defeated 40 enemy vessels in Ship Control gameplay.
20 
Locked and Loaded
Fully outfitted a ship with the maximum number of Wild cards available.
20 
Extra Credit
Downed 3 or more enemies with one shot from the Railgun.
15 
Bombs away!
Downed 5 enemies with one support call.
15 
E.O.D.
Disarmed or planted 20 charges.
15 
Fire in the Hole!
Downed 40 enemies with Grenades.
15 
Down But Not Out!
Recovered 5 ships.
15 
PEGS!
Found all 28 hidden pegs.
15 
Incoming!
Used your first support call.
10 
Naval Mastery
Occupied all support positions in "Overrun".
10 
Brought a Knife to a Gun Fight?
Downed a Thug with the pistol.
10