My dude no matter how much you say it, Eureka (all areas as a whole) and BSF & Zadnor aren't dead, just because you were "one shotted" by 3 adds doesn't mean anything at all, you said you searched for a reddit guide about how eureka was done by a %10 of the playerbase but didn't bother to find a guide? it's a well known fact that you have to be carefull to what you pull and never mess with mobs 3-4 levels above you, buy one of the defense boosting armor pieces from the mb and eureka exp potions and use your magia board properly to whistand more attacks or do more attacks depending of the mob element