The whistle mechanic works in same way as how it worked with the house at the end, if you get in range of hearing the whistle, it can guide you straight to the player. You found a way to bypass that through the bounds of the map :P. There was alot missing in terms of what I wanted the final product to be, I over scoped and spent far too long on the follow system, which I'm glad you appreciated as it was alot of work to get right. I had intended on making the map somehow endless, but I haven't quite figured out the best way to achieve this. I also really wanted to add in some enemies. Sadly alot got cut so I could submit something I was semi happy with. Glad you enjoyed the audio :)