You need to know that single wraithwings always try to stay 5 squares away from Beethro. That means, if he's careful, Beethro can step anywhere on the main 14x14 square of bridge without trapping the wraithwing. That's useful when you're manipulating the mimics.
But there are only 3 mimics. That leaves 3 eyes for Beethro to kill with his sword.
For that, you need to know about vertical movement preference. Like many other monsters, when a wraithwing wants to move diagonally, but can't (as on the orthosquares in this room), it'll move vertically instead.
That should tell you which eyes can be killed with Beethro's sword.
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×They're the ones on the east and west sides of the square. How to do it:
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×Put the wraithwing on an orthosquare. When Beethro steps out of the main 14x14 square of bridge to kill the eye, the wraithwing will move vertically, and won't get trapped on the arrows. Make sure Beethro steps right back, before the wraithwing moves again.
