I can confirm that Chemical Art did indeed admit he was "enjoying himself" while playing Valley 2. I've got the screencaps to prove it, in case anyone doubted it.
Man I hope you took lots of screenshots. The joy and horror of discovery was only matched by our collective reactions.
[A taste of one converstaion toward the end upon "leveling up" our spell classes]
Me: NO TIME TO SLEEP, NEW SPELLS
<someone else> owl summoning!
[note: It was not literally summoning owls, but it was cool nonetheless]
Another: I don't like my current spell selection, whoa, they do look nice though...and they hit hard! Ok I suppose this can work.