elecreativity

Hi, I'm a nooblet started playing.. I was wondering if there is a cap for dungeon dating, I've been dungeon dating from level 80-85 the whole day with no problem, but I can't do it anymore, any details? Also, I am a knight going to be a destroyer, and I'm having a hard time fighting the knights and horses in Ghost Tree Swamp as an alternative(I have a full VIT build), any tips or advice? I'm only using level 75 equips, because I don't know how to get the good equipment sets for knight :-( other than lucky boxes