Hey... I spent ALOT of money in RO to make loasd of various different assassin builds, but still I do not know how to make one and this is just wasting my dam money T_T

I normally pick agi, str, dex. I get more agi then str and dex, but when it comes to fighting... I do like 60's and im an assassin cross + level 90...
So please can you help me make an assassin build. This is really getting out of hand