get to level 25 and use 3 deadlys (Not Avin's). For avin's turn use might up (Skill) then use deadly next turn. then have everyone just normal attack him ... it worked for me but i was level 38 when i fought him.

wen is fought it i was lvl82

NO SWEAT!!!!!

but now im lvl 87 wid 3 attacks idfted bellias but im not happy becoz its 2 easy
i reached dat lvl coz i worked hard