af4ccted: Maybe I should've clarified- You don't need to redo the whole pattern after each intermission!
Tahazzar: That's a shame indeed! I did give a checkpoint for the fake ending (so you don't need to restart the level for the true end). And I felt like I shouldn't give a checkpoint to the secret one due to finish-reasons (the level's theme turning does feel a bit off putting, so I thought it should just end right then and there rather than putting it back to the "real" game). Besides, I tried to make sure this level's waaay easier than most of my other levels for the sake of that. But hey! I can see why you feel that way.
Maybe I should just get rid of the hint to the secret end.

I got the secret ending... by accident on my first playthrough (?)

Making someone redo a map they just completed if they mess up is neither fun nor engaging.

I tried the map, and so far, it seems glitched - once i've been given the pattern, i went through it, completed zombie-apartment level (the one on the third preview screenshot)

the talking fridge asked me if i remember the pattern, and so i did the correct pattern again, but it teleported me back to the same level i completed!

(i haven't tried to restart yet)