Bonehead

Trait Bonehead
Benefit	better critical hit resistance
Penalty	-1 to Intelligence

A thicker than average cranium means you can shrug off hits to the head that would floor others. Unfortunately that doesn't leave much room up there.

Bonehead gives -10 to the critical hit roll, in case of eye and head criticals. This does not impact the chance to score a critical hit, but reduces the effect (which is decided by a d100 roll, modified by perks and traits).