Cause rogues are the worst soloers in game. You will not have solo efficiency anywhere at that lvl, even if you were de leveled with NToV stuff.
Just find a necro and ask if you can duo with them. They often solo and you can stabby stab stuff they fear. Or a SK since they can also fear but are also pretty shit (but not as shit as rogue) at soloing mobs. Grab a SK buddy and go to town on BW giants, or DL, or w/e
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