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I obviously need to use a decoy in area one, as to be able to kill the two roach queens my mimic has to be on the right side of the block in the middle - and without a decoy the seep will be on the left side.

I also obviously need to use a decoy in area two, as there's just too much distance between the queen and the horde to be able to kill them all - even if I use the queen's spawns as walls to get more space.

There are only two mimic potions in the room, and there are three areas Beethro can't get to. Therefore, I need to use the decoy potions to kill the enemies in one of the areas. That means killing at least two enemies (the roach queens in area three). Using the logic outlined above, that means I have to kill two enemies with one decoy potion. Argh.

×You've already seen what you have to do, you just have to figure out exactly how to do it.

×In Fafnir's image, two decoys to quickly dispatch the queens near (3), then one mimic near (1), one mimic near (2), and move both carefully through the spawn. (1) was definitely tricky though.