Thanks for the comment!
I agree that many of game features are not obvious, especially because some of them have emerged in the development after the menu turorial images were made, and I had no time left to edit it afterwards. The fact that you can shoot a chain to break it is obscure at first, even though it being the main mechanic to keep group from dying or fit through holes. The gameplay in general suffers a great lack of visual and sound effects to indicate what's going on.
These problems were meant to be fixed, but the time ran out. At least I'm glad that You managed to get it and enjoyed my game a bit. Thanks!