Ultimately, Lucidity is a pretty good platformer/puzzler with a fantastic art style and a neat idea. Unfortunately, it lacks complexity both in its mechanics and narrative, which renders it rather forgettable in the long run. It's fun to lead Sofi through her dreamscapes at first, but grows frustrating all too soon, and there's not much motivation to repeat the process.
Lucidity is a bit like someone you go out on a few dates with before realizing that they're sweet, but shallow. That's Lucidity in a nutshell, lots of promise and little delivery.