I'm extremely impressed. That was a really lovely experience.
The puzzle elements are really well designed. It took me a little while to understand the nature of the one with the bird/squirrel type creatures, but it was never frustrating. Some gentle guidance towards the next section might have been helpful, but I did manage to find them all in the end so take that with a pinch of salt.
The art, sound design and music are fantastic. The changing palettes as you move from are to area are especially nice, and the texture work is gorgeous.
Again, I'm really impressed, especially for a 'student' project. Congrats team, you've created something very special here :)