Donut Games's cute and charming Metroidvania Traps n' Gemstones is a hard game to write a walkthrough for.
It's so open-ended and nonlinear. You can complete the game in pretty much any way you see fit, collecting the relics (and the keys you need to open the treasure chests) in whatever order you like.
But, there are some key things you need to do, and some important areas you need to unloc...