Thick Skull
Changes effects that would stun the character to daze instead; the guide gives a Constitution requirement of 10.
How it works
The guide says Thick Skull requires 10 Constitution. Its stated effect is that any effect that would stun the character instead dazes them. The passage does not quantify the resulting loss of action points or give further conditions, so the record is limited to this described change.
Read the supporting references
A focused reference to named combat feats and crafting choices described in the supplied Underrail passages. Most detailed effects come from a community guide whose page flags it as incompatible with Underrail; crafting facts also come from the Underrail Wiki. No claim is made that these details match every edition or expansion. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.