Just check it's weaknesses and woop but, refill potions and raise alchemy, raise levels raise melee and mage power also go to the ruins are and you could get up to 900-1300 exp!!! hope this helped.
you have to around lvl 9-10 Akira is IMPOSSIBLE to defeat, trust me, I've won more than 300 rounds and he still doesn't give up. If you don't believe me, go on YouTube and search for me, my username...
The truth is, you don't have to be on level 30 to beat it. Simply train your train REALLY hard and teach it new skills until you defeat it. It is very simple.