Vigilance чит-файл №1

Hint: Play as an operative with an assassination skill and use a silenced
weapon--that'll earn you a 1.5x damage bonus. Aim for the head, and you'll do
even more damage and drop a foe in one shot most of the time.
                               
Hint: It's much easier to achieve "situational awareness" if you play in
first-person as much as possible--use the mouse-look and strafe together to
give yourself the ability to spin around corners and "circle strafe" your
opponents.

Hint: Due to the poor controls, stealth really is the best way to avoid too
many enemies at one time--keep a sharp eye for enemies at a distance. There is
no range limit on weapons, so you can drop foes from a long way off.