Enjoyed the game enough that I played it through twice :)
One question, how do you get the last animation (giving the boat back)? I also didn't get how to interact with the Easter eggs off the beaten path.
Some criticism: The orange indicators for the challenges were a nice indication... once. Adding more and more as you continue to die just made me feel bad. Dying is a bit slow, especially in the challenges. The enemy patterns after you've alerted one can get you into situations where it's almost impossible to win without dying.