I think this game had a great setup, and charm to it going into it. It looks great too. But once the "meat" of the game gets going it's mostly climbing the same tower.
This is where the game falls short I think. I would have loved more story segments like there was in the beginning. It was a nice feeling of discovery and story being told. But once you get to the tower, it's just the same thing for too long. The tower was fun for a while but once you sort of "get it", it gets a bit boring doing the same thing.
The gameplay and game-feel is pretty nice for being a smaller scale platformer. Interesting direction going with the back-and-forth wall jump. It made for good puzzle solving. I thought the ball+bark button combo to be a bit tricky to get used to. Perhaps it would have been better to keep the down button being drop/pickup rather than introducing another button (s)?
I found the ball-trench thing to be a bit frustrating. Not because it made me back-track. But because I was eager to see if there was more story to be found in the tower. Once I realized this game was going to be mostly platforming from this point forward, I did start feeling a bit disappointed.
It's a decent game though and I think you guys did a great job. Looks great, plays great. It just needed more variety.