Needed a little time to understand how the game worked, but once I did I really enjoyed it !
I liked the little dialogues with the totally not suspicious individual, way more interesting than to just put the missions on the top left one after the other without any context imo. Makes you want to stick around, too.
I'd say my biggest complaint has already been mentionned by a previous comment, but the item transporter was pretty hard to work around. Every time I made a new path that involved destroying a previous path, it just didn't get the direction right and I ended up clogging the whole thing.
Anyway, a really good game, definitely got me hooked !