New update.
6N2W: Yes, that's intended.
2E: Definitely not trivial so I decided to leave it and I added I challenge for my original solution which involves using only lemmings.
2N2W: I changed it a bit because I broke my challenge, but now it should work fine (hope the scroll is not misleading). To be honest, I'm quite happy that I managed to create a challenge you couldn't solve

But this also means that it's really finicky, so it's better to leave it as a challenge (which now works).
What's left to do:
- Replay 1N2E, though I believe there shouldn't be any US, only variants to my solution.
- Fix challenge script in 1W, please help me with that.
- Maybe scripting a challenge for 2N2E (kill monsters one by one, is it possible?)
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There's not some other world out there where everything's gonna be okay.
There's just this one, just this rock.
-33th Skywatcher