Uncharted 3: Drake's Deception achievements

Defeat 20 Enemies While Swimming

Find 100 Treasures

Defeat 50 Enemies in a Row Without Auto-Reloading

Defeat 30 Enemies in a Row with Your Side Arm

Kill 30 Enemies with the Dragon Sniper

Find 80 treasures

Finish the game in Crushing Mode

Defeat ten enemies in a row, alternating hand-to-hand combat and gunplay

Kill 30 Enemies with the PAK-80

Complete one Cooperative Multiplayer game

Kill 30 Enemies with the Mag 5

Defeat 30 enemies with the SAS - 12