Check out what our Russian friends play.
As would be expected the game is in Russian, but check the screen shoots for control panel info.

Everything is in Russian, so the challange may be just to figure the game out

Controls:

W, A, S, D = move
mouse = aim
left mouse = shoot (pistol) or throw knife
right mouse = impact (rapid pressure), seizure (to stop up and to let go), the thrust of knife (if is collected force)
1,2,3.. = change weapon
space = interaction
C = change view (normal, thermal, night, electronic)
Z = view health status
E = drop/throw ???
Q = shout
Shift+W,A,S,D = run
F4 = windowed / black background
F6 = save game
F7 = load game
F10 = pause
. (dot) = show map
esc = back to menu

No install needed