Deja Vu? Seem to remember we had this recently. Anyway:-
Mouse 1 - Shoot
Mouse 2 - Sprint
Mouse 3 - Reload
Mouse 4 - Activate
Mouse 5 - Class specific weapon toggle (i.e. SMG/Dynamite/Landmine when Engy, Binocs when Field-Ops, SMG/Needle/Health when Med, etc.)
(Being left-handed, mouse 5 is thumb)
MouseWheelUp - Pistol
MouseWheelDown - Grenade
Movement - Cursor keys
Shift - Jump
CTRL - Crouch
(Lean = Mouse4 + left / right cursor keys)
ENTER - Weapalt
DEL - SMG
END - Needle / Air-Strike / Pliers / Smoke Canister
PGDN - Health Pack / Ammo Pack / Dynamite / Satchel Charge
INS - Knife
HOME - Pistol
PGUP - Grenade
KP_INS - Binocs
Note: DEL, END, PGDN etc. sets Mouse5 to SMG when used so I can always return to SMG after using another weapon / tool with a mouse click.