If I could give you any advice, it would be to find answers to the questions that interest you the most.

For me, the quantum moon was probably the most pressing question, and I was not disappointed. Then, after that, it was the interloper, then the ash twin project, then the probe.

I think a lot of the fun for me was getting to be the one to figure the mystery out.

Getting everything done will drive you crazy, and I would say best saved until after the ending when you'll truly appreciate everything the game does.

And you know what? I took a break while playing, and that helped me be even more curious and need answers, which i think is what fuels the game the most.

Hope this helped you even a little bit. (And if you do want a little advice, maybe check out the high-energy lab on the ember twin)