[Pierre-Marie Baty]

I have tested it again today, and from what I see it works perfectly well ?

I tested it in CS 1.6 and The Specialists. It works in both.

Just ensure you see the message "Headshot: plugin attaching" and set the damage_allow CVAR to some value AFTER the plugin is loaded. Bring down your console and type "damage_allow 6" for example. Then shoot at an enemy and you'll see you won't be able to kill him unless you aim for his leg.

Note that it doesn't work with "projectile" weapons such as missiles and bolts.