Critical Hits and Wounds

From publisher blurb:

Hit Points are abstract.
Do you feel that your games might like more realistic combat wounds and damage without losing the ease and abstraction of hit points? Would you like critical hits and wounds that create gradations beyond down at 0 up at >0? One that takes into account all types of damage?

This contains six pages, containing information on all damage types, slashing, piercing, bludgeoning, teeth & claws, fire & energy, and cold & nether.