I really liked the idea of having to find your party and banding them together before you try and find the exit. TBH I didn't read description so I had no idea about the whistling mechanic, I just had all my characters run to the top left of the map before I grouped them up. I liked how you used sound here as a gameplay element both with the whistle and with the cabin. Lovely atmosphere, if there was a bit more to this game I could see it doing very well in the indie horror crowd.
Kudos, great work.