Complete "PHANTOM LIMBS" mission.

Complete "PROLOGUE: AWAKENING" mission.

Kill 10 infected animals of each species.

Reach the maximum level with your character.

Prepare a first potion.

Meet every character in the game.

Finish Kovac's first challenge in co-operative mode (local or online).

Kill an infected with a charged attack for the first time.

Upgrade 10 weapons with modules.

Kill 100 infected with flint-tipped fletched ammunition.

Finish each of the game's festive quests.

Finish Kovac's first challenge while keeping the pylon intact.