Full list of all 33 Battleship achievements worth 1,000 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox 360.
Found all 28 hidden pegs.
Downed 40 enemies that are stunned by the LRAD.
Destroyed 20 enemy ships with the USS Yukon.
Downed 40 enemies with Grenades.
Occupied all support positions in "Overrun".
Downed 40 enemies with the Pistol.
Downed a Thug with the pistol.
Completed the game on Admiral Difficulty.
Completed the game on Captain Difficulty or higher.
Completed the game on any Difficulty.
Completed "End Game" on any Difficulty.
Destroyed 20 enemy ships with the USS Laredo.
Downed 200 enemies with artillery support calls.
Fully outfitted a ship with the maximum number of Wild cards available.
Completed "Retaliation" on any Difficulty.
Defeated 40 enemy vessels in Ship Control gameplay.
Completed "They're Back!" on any Difficulty.
Destroyed 20 enemy ships with the USS Missouri.
Downed 40 enemies with the Alien Railgun.
Downed 40 enemies with the Shotgun.
Completed "The Big Guns" on any Difficulty.
Destroyed 20 enemy ships with the USS John Quincy Adams.
Downed 3 or more enemies with one shot from the Railgun.
Completed "Overrun" on any Difficulty.
Recovered 5 ships.
Disarmed or planted 20 charges.
Downed 40 enemies with the Carbine.
Completed "Construction" on any Difficulty.
Downed 5 enemies with one support call.
Destroyed 10 enemy ships with the USS Chesapeake.
Downed 40 enemies with the KRAW.
Completed "The Arrival" on any Difficulty.
Used your first support call.