Didn't actually test the third room, but I think it might be possible. Anyway, good luck with these. I look forward to trying the other entrants' entries.
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1N: Were-wubba. Wereba?, An unconventional trapdoor puzzle, Use a firetrap to control whether a construct revives or not
1W: JtRH abridged, Blow up dead golems, GET GOBLIN. USE GOBLIN ON SNAKE. KILL GOBLIN., Traffic Jam
1E: Monster smuggling, Room with exactly one roach in it, Third time's the charm
Additional Spoiler regarding room solvability:
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×1E is impossible. The other two have been solved, albeit with unintended solutions.