QUOTE(Translated @ Jun 20 2007, 06:56 AM) [snapback]1634836[/snapback]
Greetings fellow earthlings!

I would like to make a wall that skulks can't climb and is it possible to do this to an already existing wall?
A trigger_push with a very high value (I think you need to find the highest achievable speed of a skulk in order for the skulk to not make it to the wall) Go outside in Hera and try to leap on to the cliffs to see this effect in action.
Mind you, this technique could be quite annoying if it's in a high traffic area (unlike the cliffs of hera) so you may want to try some other techniques. A good lip, while certainly navigable if you take your time, can prevent skulks from quickley racing up. Basically, you're just blocking their movement a bit though.
And otherwise, some func_wall's seem to randomly choose whether they are sticky or not.

So basically, there isn't much you can do to stop skulks from wall-walking.