The wraithwings in the NW chamber were the most troublesome part of this room, at least until I decided to go on the offensive:
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×I struck the orb with sword pointing south then moved 4 x NW and 2 x NE.
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×I practised a bit of swordplay but polished of the bulk of the wings dancing around with sword pointing west.
DROD is a truly great game but I feel that enjoyment is enhanced by working out the problems on your own, so, although I like to be helpful, for future reference could you please let me know if you found the above hints to be too specific.