Conversation so far:
What was Powers?
Pinhead is an extremely powerful being, and as such, has several supernatural abilities.
What are some of these abilities?
His preferred method of attack is by summoning hooks and chains to mutilate victims.
What else is significant during this time?
Pinhead is highly resistant to damage and direct assault, being able to resist both gunshots and futuristic energy weapons.
What are his weaknesses?
In order to act in the physical world, Pinhead needs to have been purposely summoned through the Lament Configuration.

Question: What else is a weakness?
Self-contained rewrite: Other than having to be purposely summoned, what else is a weakness of Pinhead (Hellraiser)?