I have not spent time to look for most of the pickups in previous areas, but after completing the demo, I am very interested in how the rest of this comes about. Love the dark Maridian palettes. The puzzle oriented aspects are what I would call a mashed potato. Lots of great stuff with some lumps thrown in. I like the direction this has gone since the first demo patch. For what I don't like, you already know how I feel about physics changes. I can live with them, and these are alright. But still. Anyway, besides that, your visual cues are excellent. I only missed one, and I should have seen it.
With how it has got, Cider feels like it will be an extremely small hack. Maybe SFI size, but it almost felt half over after the demo, which I hope isn't the case, because Cider has a lot of potential to be an excellent hack.