From the publisher:
This game is for serious players only! Hordes of Heart-Pounding, Heavy-Hitting, Hack-and-Slash action adventure await! This game is not for sissy players who don't want their characters to die. In a BRUTAL game, your characters get killed all the time. How long can your characters stay alive?
Revised version of the 4th Edition rules, with expanded content. Revised to 66 pages, published September 16, 2014.