Destroy the enemy carrier first of all enemy ships.

Destroy the enemy battleship first of all enemy ships.

Destroy the enemy cruiser first of all enemy ships.

Destroy the enemy submarine first of all enemy ships.

Destroy the enemy destroyer first of all enemy ships.

Destroy the enemy patrol boat first of all enemy ships.

Hit with your first shot.

Win a battle without losing a ship.

Don't hit anything 20 times in a row.

Lose a battle without sinking an enemy ship.

Win 50 online battles against a human player.

Win 300 online battles against a human player.

Win 150 online battles against a human player.

Win 25 online battles against a human player.

Play 30 games in a row without a self-imposed disconnect.