Quick-Witted

Quick Witted is an achievement in Metro 2033.

Overview
This achievement is awarded for shooting the chain supporting the chandelier in under 20 seconds of entering the room on the level Library. Once the player climbs up the fallen bookcase they will find themselves in a medium sized room with stair leading up to another door, quickly look up and shoot the support wire that holds the chandelier. It will have a noticeable gold hue that will show you what to shoot. If done quick enough you'll earn the achievement.