The Walking Dead

Choose who should cross the sign first (I chose to go first). When you reach the other side it collapses. You make your way down to the street and pick up some broke glass to use as a weapon, in addition to the meat cleaver.
Walk through the walkers using either weapon. Keep killing walkers, but do it quickly. If you pause too long they jump you and you die.

When you get to the hotel, you get the achievement.