easier just to restart, but here's what you can do from your current position:
×Firstly, western aumtlich:
Turn sword to northeast and move at 10,16(dont move the mirror while doing so)
Move at 9,18 turn sword north. Wait until aumtlich isnt lured at 9,16
Move at 12,19, then - at 13,18
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×Then, eastern aumtlich and eastern mirror:
Move mirror from 27,17 to 28,18
Lure aumtlich at 27,16 to 27,17(just stand at 25,18 with sword northeast)
Move west, southwest, west(aumtlich should face west by now)
Now, manipulate mirror from 28,18 t0 29,17, from 29,17 - to 27,15
Move at 26,14 and move mirror back at 29,17
(note: mirror manipulation was to avoid passing through aumtlichs beam and making things too complicated)