I've played the demo. Got stuck at level 2? (post the A Small Robot Story title cutscene) because I didn't have enough stamina to push myself through it.
The atmosphere is great. The art style takes me back to the old-school platformers.
Sometimes I felt like the level doesn't "float" well when running through it. I often bumped up against the same enemy over and over again. Especially those turret-ones on pillars.
But damn, that level music is so catchy.