The curse was a direct hit, hitting Pinhead directly in the upper back. Pinhead staggered forward somewhat... then straightened, laughing.
"...Fool. Did you really think your mortal incantations would pose any threat to me? I am beyond such pitiful things as life and death."
He turned to face Voldemort. Suddenly, a doorway silntly opened in the earth several feet behind Voldemort. Chains shot out of the doorway, seeking to impale Voldemort and yank him through.
OOC: Just so you know, Pinhead was capable of tanking futuristec energy blasts (which possessed a similar function to the killing curse, in that it instantly stops its target's heart without any outside damage to their bodies) in Hellraiser IV.
Voldemort merely grimaced at Pinhead's words. So mortal incantations would not work? Fine. At the clanking of chains heading for him, he turned back into the ball of mist and flew off, towards an armament on the castle surrounding the courtyard. "I see..." If Pinhead came closer, Voldemort would yell Reducto! and if successful would blast a hole through Pinhead. That is, If Pinhead came any closer.