Ac Definition

"AC" "ARMOR CLASS"

"AC" is your armor class.  It is a number from -100 to 100, roughly
defined as follows:

  AC  Roughly equivalent to
-----------------------------------------------------------
 100  Naked person
   0  Very Heavily Armored (Durasteel Armor, and "two shields")
-100  Armored battle tank

A scroll of knowledge and lore displays your armor class as a number
such as 78/10; this means 78 on a scale from -100 to 100.

AC REDUCES damage. For every -5 points of AC, 1% weapon damage
is reduced (skills and powers damage do not count).

50 AC-apply = -50 AC, but will also reduce 10% damage.
200 AC-apply = -200 AC, but will also reduce 40% damage.

See also: DICE CALCULATION FORCE SHIELD SCORE