Thank you very much! ^^
First of all, there is a Walkthrough available here: https://www.patreon.com/posts/119207938
I guess it couldn't hurt to mention its existence in the intro screen... I'll keep that in mind!
If you went through every room of the Night dome and still didn't find the missing stars, even with the radar, you might be missing a secret room! One thing you can use to figure out where it is is the fact that this map is symmetrical ^^
I agree that some secrets are way too hard to find, I do plan at hinting at some of them in various ways in future builds. And, I also have plans to make fights skippable if you've beaten that enemy enough times! The encounter rate is an issue for sure currently.
One last thing, you can get every power orb without restarting! It's possible to go back to Auria and Sablee by using the pod in the top right of the Rietti plains once you've beaten the last boss of the demo ^^
Again, thank you! I appreciate the praises and the feedback!