I like the fact that the game doesn't generically impose a control scheme, but there are couple of things that bother me.
1. I don't have a list of the keyboard/mouse defaults, so I can't use a controller on the first playthrough, because I have to discover all the keys while I'm playing.
2. It's difficult to figure out how to do things, at first. You could spend the first hour wandering around, and not figure out how to grow a seed. Being regularly told that having dreams about the sun "is a nightmare" gets tiring.
3. Discovering new areas is a dizzying experience, because I don't know what's a stake, or how long it's going to take for the environment to start explaining itself.