alignment

Alignment is a measure of how good or evil a character is.

There is an increase in the points value of a given kill, if a) the target
is of very different alignment to the killer, and b) if the killer is good,
(having high, positive alignment).

If you are not a clan member, the temple to which you recall is dependent
upon your alignment, and the healers at the different temples may cast
different spells.

Characters' alignment will change, as they kill monsters in the world.  
The more good things killed, the more alignment will tend to reflect the 
character is evil, and vice versa.