Solve a Labyrinth.

Defeat at least three enemies with one attack in the story.

Escape the mine.

Survive the lycan attack.

Complete the game with any ending.

Enter the X-13 elevator.

Use the UV Flashlight to kill a Viral.

Perform 50 headshots with a ranged weapon.

Activate your first Metro Station.

Modify your weapon for the first time.

Fall from a combined height of at least 10,994 meters.

Kill a Volatile.

Defeat the Renegades attacking the Fish Eye.