Rangers will have to ration ammunition and maintain versatile home-made equipment to survive in the harsh irradiated ruins of the Metro system. This latest survival guide trailer for Metro: Last Light gives you a taste of what this involves, from keeping your all important gas mask supplied with filters to using a high-tech stealth watch to sneak around.

Metro: Last Light launches on May 17 for PC, PS3, and Xbox 360. You can read more about how 4A have both streamlined and deepened the inventory system in our Metro: Last Light hands-on preview.