Quote Originally Posted by Renmiri View Post
31 is way under leveled for him. Go back to the lower floors and try to get close to 40.
That's slightly overkill I think. I might have been level 35 or so when I beat him and I had no trouble. I think I entered the labs at around level 31, but since I did it months ago I can't recall that well. Heck, the official guide recomends being level 40-45 at least for the last boss. Definitely try to gain four or five levels maybe, but with the proper abilities and strategy you should be able to beat him without much trouble by then.