Thanks for playing and the nice comment.
The main mechanic and idea should be that you need to do a difficult decision: "Should I go further to get more riffs or do I better turn around as long as I can remember the way I took back!". From your comment and the others I can see that this "feeling" doesn't come through as much as I expected. I also realized this when I playtested it. I need to think about how to improve it and I am open for suggestions :).