Kill three enemies with one explosion

Kill 50 enemies with the PM - 9mm

Kill 10 enemies with headshots

Kill five enemies in a row with headshots

Defeat ten enemies in a row with a single punch, after softening them up with gunfire

Defeat 75 enemies in a row without dying

Complete one Competitive Multiplayer game

Finish the game in Crushing Mode

Find all 100 treasures

Find 90 treasures

Defeat 70 enemies with the SAS - 12

Defeat 200 enemies with the GAU - 19