From EpicDuel Wiki

Agility is a new stat that was introduced to EpicDuel with Gamma 1.1.0d to discourage high health builds. Agility decreases as the character's health increases. Lower agility results in penalties to defense and resistance.

Agility Score

Agility is determined by the amount of health a character has. The Agility stat affects the defense and resistance of a character in a positive or negative way depending on the Agility:

Agility	Health	Defense	Resistance
100	0 - 95	+1	+1
90	96 - 110	0	0
80	111 - 125	-1	-1
70	126 - 140	-2	-2
60	141 - 155	-4	-4
50	156 - 170	-6	-6
40	170+	-8	-8