How do I stealth attack again?

[HunZolka]

Hey I seem to have forgotten the stealth attack controls and can't seem to figure it out. I thought it was press 'R' in stealth mode, but when I did that to a cop or a biker the last 2 occasions they just got up. Am I missing something?

[Bazaarx]

yep its R unless you have it binded to something else, check your key bindings