i can not defeat mushin tower 16th floor's two sisters with a newly made archer

[schupunk]

i can not defeat mushin tower 16th floor's two sisters with a newly made archer, if i can see any chances with them then i may eat 6 dragonbloods and try like i did with a summoner or a warlock a long ago.  but not this time, pretty much one sister's 2 energy balls and i am  basically out, i can see that each sister has 3.1m HP that was used to be about 600k. 

[TrueHeartz]

AFAIK they buffed all the solo dungeons a few months ago