I love puzzle games but the moving of the obelisk seemed a bit tricky - I had no idea where to move them or what I was trying to achieve there so in the game itself it might be a good idea to add some subtle indications to the player on where they need to go, unless I totally missed it. I think a bit more sign-posting would be great. Even though I couldnt do it, I did find the hieroglyphics and the room where the key is located but I didn't find any rosetta stone so I think I'm just missing this one key thing in order to complete the game. So this game is obviously focussed on mechanics and I appreciate it for that because there are a couple of good mechanics in the game like the wall jumping, and clearing the obelisk and decryption puzzles. I think if you added a basically animated character and some background music and a couple of sound effects it would really take this game to another level. I hope you keep working on it or incorporate it into a larger project because I love the foundation and the setting for it. Good job.
Edit: Seeing as how this is a Unity game I thought I would check your code to see if I could see how the obelisk puzzle was setup lol, however the repo is not there! Check it out when you get the time.