Not only is From Dust always-on DRM, but it's glitchy (as expected). Took me about 15 minutes over multiple attempts to sync my savegames after playing the game. Settlers had the same issue. If it fails to sync, the next time you play, it just sits there until it's successful. So yeah, fuck you again Ubi. At least it was only $11.
As for the game, turn off the mouse scroll thing. Helps a whole hell of a lot. Or just buy Bastion instead.