Awesome work! This is really fun to play and the graphics/animations are gorgeous!
The gameplay loop is solid, and mixing up the way the obstacles work is really fun (the paper airplane is definitely my favorite!)
If you keep working on it, two things I would suggest would be to add a visual indicator to what can/cannot be shot with the water gun and also having variable jump height (like in Mario, the longer you hold the jump button the higher you go.)
Awesome work all around - your team of Beavers should be very proud!