This is kinda fun trying to look for secrets, anyway it turns out there isn't a map there. I poofed that cat out of existence and it didn't work, the code is also missing a 'Plan' function. I think its just decoration.
aw man, that some pro level trolling from the devs.
Do you think it would be possible to give yourself 3 pig tokens and transform? To enter the room with the alien. Do you remember why was the room closed in the first place?
The alien was locked by a pillar door, I think you had to collect all pillars minus the one you get from the sweater cat. I will also try to become a pig.
Edit: nothing happened, there wasn't anything different. I don't know what the pig is for.