I think the atmosphere you captured is awesome, I really liked the fantasy vibe. The idea of hopping from island to island is also super cool. Unfortunately, outside of this foundation I didn't really enjoy the game. In fact I played for a total of 2 minutes and 40 seconds before beating it. Which I'm sure could be done much quicker.
I agree with what others have said, the camera and movement aren't great. For me moreso the movement than the camera. It's like you'd accelerate, but then get near something and slow down to a crawl. It was hard to move around islands when it was constantly changing from fast to super slow. Additionally I found moving from island to island really hard to do, I think maybe something like pockets of air around the island that boost you into the air, and then have the character glide around would be really really cool.
For a university project you've certainly got a really good foundation for a nice and short puzzle game. With some tweaks and changes I think you could really have something special here.