Complete each achievement to get the allotted gamerscore.

Unlockables

Beginners Luck (10) Score a hit on your first turn
Captain Win! (10) Win one game of Battleship against a friend
Destroyer'd! (20) Sink your opponent's Destroyer before any other ship
Escort Mission (30) Finish a game with two ships still afloat that are next to each other
I thought I heard singing... (10) Do not fall for a Decoy
Iron Bottom Sound (30) Sink all your opponent's ships in Salvo Mode within 4 turns
Make Every Shot Count (20) Sink a ship longer than 3 units without missing
Minimal Loss (20) Win at Battleship while keeping at least 3 of your fleet afloat
Sea Commander (30) Win 20 games of Battleship
The hunt for Blue November (20) Win a game of Battleship Salvo with your submarine still afloat