An excellent small map pack. The platforming segments flow well, the shrinking gimmick in Act 1 is cool, and the vibes are absolutely immaculate. It feels very liminal while using none of the traditional liminal space tropes, and I would love to see more maps like this.
I will complain a tiny bit. The switch puzzles are one thing, but that's just a matter of taste, and there's a few dark bits where I got more than I'd like, but that's really hard to balance with wanting your players to be a little lost for the vibe. But if you die in the race in Act 4, the walls that close in behind you before the checkpoint come back up, and then back down if you go past them again, causing you to get softlocked. And because it's so dark, it's very easy to do go the wrong way and cause this.
Still, I'd definitely recommend checking this out, and I'm definitely looking forward to more from this modder.