Yeah, this one is a toughie. The solution is substantially different from 3E even though they look similar at first. First of all the consequence of the three wide doors mean that you can't have Beethro step on the fuse from that position and move fast enough to the North. So...
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×Don't have Beethro light the fuse before moving North. But you need to light that fuse in order to kill the decoy. So how to do it? Is there some other way to light it?
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×Note the blast radius of the Bomb. The bomb explosion can light the fuse while you're standing far enough to the north to make it through on time. Of course, this complicates things because that pressure plate is also in the blast radius, so you'll have to move the mirror onto the pressure plate after the bomb goes off. This is rather tricky to pull off, so some hints in the next secret tag.
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×Did you wonder why that little nook at (14,6) is there? Spoiler:
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×When the bomb goes off you should be standing at (14,6) with your sword pointing west and the mirror directly below it. You can then turn your sword to move the mirror onto the pressure plate. You should have just enough time to get out of there before the powder keg goes off.
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Links to neat forum tools that I always have trouble finding:
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