NoMoreFcuk wrote:

LOLS~ ==

waste a lot of points ==

place those points on str at least wil provide higher damage .. ^^

No, add points into WIS is not waste. Besides it is needed, otherwise you will have a low magical defence and small SPmax. If you don't need WIS, then get at least until WIS15. That is good enough for a full Fire Killer.
It costs you only 5 levels and that is not many.