Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Braindead	Kill 250 zombies.
Butler	Open hundred doors.
Chief Executive Janitor	Turn off the lights.
Deadeye	Get thousand headshots.
Dear Diary	Collect all pages of Jill's Diary.
Fast Food	Reach thousand meters in a single run.
Fresh Meat	Get bitten by zombies.
Machine Gun	Shot 5000 bullets.
Marathon	Run 42195 meters.
Mass Creation	Use 10000 objects.
Overdosed	Start with all perks equiped.
Until Dawn	Survive two days.
Z-Man	Collect all diary pages, audiologs and clues.