W = Run
S = Back
A = Left
D = Right
Shift = Walk
Space Bar = Jump
Ctrl = Roll
Mouse Left-Click = Action (Shoots gun, picks up items, grabs ledges, etc)
Mouse Right-Click = Look
Weapon = E (un-equips/re-equips weapon)
Z = Flare
C = Duck
Dash = F

Here is my youtube video going over the controls if you want to see a visual guide explaining the controls otherwise I hope this written guide has been useful to you.