its flee and perfect dodge

in ur stat there will be something like 180+2
180 is ur flee and 2 is your perfect dodge.
flee depends on hit.
when you have high flee ur opponent needs high dex/hit to hit you
also flee is reduced when there are mobs.
perfect dodge is totally random and will always block the atk regardless or a person's hit/dex or watever
(not true for skill) even crits will miss.
it is also not reduce by mob.
the thing is that its hard to get perfect dodge =/
and not worth it.