Thank you for a nice review. The rat sure is cute. :) Shout out (!) to the creator at sketchfab.
Yeah the goal of the game isn't that clear since no tutorial or info is given. But as you point out you learn some of it along theway.
The plan was to make the level procedural and I built some randomizing but scrapped it since there wasn't time to implement it. For upcoming updates I will try to make each level much more randomized ... and the game itself longer of course. And a better ending :D