Where to start with Tunic. It´s amazing how it´s cute and lovely atmosphere looks like a nice shallow pool to dip your toes into. And when you least expect it, you´re IN.
I totally recommend not looking at any guides at all, or if you can, ask a friend that played it before to give you some hints, it´s soo rewarding to discover all it´s secrets and misteries,
And don´t get me started on the amazing OST, it´s probably the one I listen to the most lately, it´s so good.