The gameplay requires quick reflexes and strategic thinking. Enemies are fast and can kill you with just one shot, so you need to react quickly or use the environment to your advantage. You can turn off or shoot lights to avoid detection, and use vents to navigate the level.
Each level introduces a new challenge or twist, such as rigged traps that can be used against enemies, or snipers trying to get you. The game requires you to think on your feet and use your wits to overcome obstacles and stay alive.