Gaming at night is more comprehensive than in daytime. It is because there are more concerns about lightening. Only moonlights, lights from torches or flashlights are available. And the present of shadows may uncover your position.
Torches have to be used carefully too. It only help you looking for enemies in short distance, others whom hide far away may spot you. Therefore, the closer to the ground, the safer you are. Avoid to move above waist height.
A pair of night vision googles is useful to attack enemies nearby.