Shocking

Shocking is an achievement in Metro 2033 and Metro 2033 Redux, awarded for obtaining certain amount of kills with the Volt Driver (Hellbreath).

Overview
This achievement is awarded for 50 kills in Metro 2033, and 30 in Metro 2033 Redux, both with the Hellbreath (Volt Driver). In Metro 2033, this can only be done if the Ranger Pack DLC is bought as this is the only way to obtain the Hellbreath. In Metro 2033 Redux, the Hellbreath can be obtained from Armory station. The kills can easily be achieved as both humans and mutants count and can be done at any part of the game. It must be done in one playthrough, but you can restart chapters to farm kills.