Not all games on itch.io work with the desktop app. Download the game from the itch.io website instead. That should work :)
It's hard to pick one the whole thing was so amazing! My favorite moments were towards the end of the game. When you return to Styx and when you have the three options you can take following that.
I absolutely love this game. It has unique battle gameplay that I have never come across before and the whole story is just amazingly done. <3
