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.

Question: What are his weaknesses?
Self-contained rewrite: What are Pinhead's (Hellraiser's) weaknesses?