Really Great! Can't wait to buy the full version.
Bugs: there are some issues with clipping(?) through the walls while spinning forward or backwards especially in the cave areas (both the train tunnel and especially the hole). I was able to jiggle my way out in 2/3 cases, but one time I had to reset, and I did end up (inadvertently) skipping a lot of the hole because of it. Maybe something worth checking on. There are also some areas in the isometric areas where your robot can walk places it shouldn't be able to. Inside the ship, for example, there is a tunnel of walkable space on the far right going up that can put you into a tunnel that is hard to walk out of. The other examples I found were just being able to walk too far up into walls, creating a weird visual, but didn't affect gameplay.