Make five enemies drop their grenade by shooting them

Defeat 20 enemies with hand-to-hand combat

Destroyed all chasing SawBlade APCs in the Senlin Beach section

Finish the game in Easy Mode

Kill 30 enemies with the Dragon Sniper

Kill 100 enemies with headshots

Kill 50 enemies with the 92FS - 9mm

Kill one of the unique enemies listed in the Never Seen That Before Challenge.

Kill 30 enemies with headshots

Kill 50 enemies with the PM - 9mm

Find one treasure

Reach Level 10

Killed 10 Helghast using Brutal Melee