I don't really understand the game's objective.
I've tried to do just the amount that was written above the green haired guy, then I tried to fill up the box entirely, but both gave me the same results.
The controls also weren't that clear, and I had to play 3 times just to get the basics down.
UPD.: I've read the Game Design Document, and now see why I couldn't "win". It'd be nice if you could get a different ending just in the demo as well if you manage to do the objective tho