Skull chaser, Crossfire X and Binds

[sv_luck1]

Originally Posted by Gniarf

Not sure what you mean there...Anyway, to get the skull chaser you must:
1-Do the "Untouchable" challence
2-Do not get hurt (do not get even touched)
My advice is to use nail/crossbow hand+shotgun. Use the shotgun as last ressort when they are too close, and reload between waves.

ye, i knew
just need to know how to perform the skull chaser or what is it exactly

(grenade launcher worked well for me)