I managed to find them all, but I had one or two where I simply brute-forced the last rune. I found Poseidon most tricky of all.

I think it would be helpful if you would allow a tooltip to show the meaning of the rune on mouse-over. I don't think it would take away from the decyphering, but (especially in a short game) it's not realistic to start memorizing what each rune means. While going back and forth between UIs did give me a little bit more of a research vibe (which you might have been going for?), but it mostly distracted from the puzzle. I think having the tooltip mouse-over when inputting runes, but not when reading the tablets might be a fair mix.

Also it would be nice if you could forward the text in the intro (make it appear at once when pressing e.g. E).

Wow, really nice idea!

I was a bit stumped at the beginning, the explanations are almost as cryptic as the puzzles :D

I used the same tiles in my first game jam (gwj 33), nice memories.

Good job!

Wow, really unique, although it is a bit rough at the start it, figuring out what you actually have to do, but it quickly becomes fun and interesting  to do all the puzzles! 

Definitely coming back in the future so solve all of them 

I really enjoyed deciphering the wind text. After that I looked around for the other elements and then I realized that it was already decoded in my notebook. I think you had something really good with those stone tablets, do more of that.