Finally got around to trying the demo (didn't want to comment before doing so) and I'm impressed... it actually runs. (Caveat, I played with the sound muted the whole time)
Cynicism aside, its a good proof of concept(?). There are a ton of small(?) issues with the demo itself but depending on where the project goes, I can see some of them not being an issue at all (the areas are too big/movement speed is slow/zone lines are too far, but if the game grows big enough that they start getting populated with a LOT of stuff...).
I'm not sure if I was clicking too fast and cutting off the end of conversations or if the dialogue simply isn't complete yet either. The controls are wonky (please put in the option to invert the mouse) and using items is pretty much pure trial and error. The journal in particular is a nuclear disaster waiting to happen (no one is going to tolerate slowly flipping through one page at a time when we start talking 20+ days, let alone reading such small text)
Finally, I'm not sure what the gameplay is. Is it supposed to be an adventure game, "get item X, use on object Y, repeat until you beat the game" sort of thing? If so, thats fine, but the writing better be ready to pick up the slack. If not, then I completely and utterly missed it.