Loopy: if someone thinks it is important to hide a hint, please don't repeat that hint without it being hidden.
Here is how I did it. First a hint:
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×I started directly to the left (W) of the orb.
Full-blown spoiler:
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×Position Beethro at the left (W) of his orb, and the mimic on the left (W) side of its orb. Strike the orb. Swing your sword to the NE. Step W twice, killing one roach. Swing your sword SE (two swings), killing the second roach. The other two roaches are blocked by the mimic, you can kill them easily.
Game on,
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"
He who is certain he knows the ending of things when he is only beginning them is either extremely wise or extremely foolish; no matter which is true, he is certainly an
unhappy man, for he has put a knife in the heart of wonder."
-- Tad Williams