Hello, i played the game to the point of reaching the wooden gate, that probably opens after solving the puzzle-table[which i couldn't solve in this quick playtime i could spare] :). Here some thoughts that came to my mind while playing, maybe they can help as food for thought on your endeavor of polishing the game :).
It took me some time to realize i had to interact with the fire pillars in the starting gate. So lets say someone is as braindamaged as me xD , maybe some particles animating above them or something that could draw just enough attention to move near them so that the Interact text appears, could help [ for some reason i went straight to the gate inside and didn't touch any of the pillar for the "interact" text to appear].
For PC keyboard users, in the puzzle-table i would add a graphic or something that informs the player about the usage of arrow keys to change part of the puzzle that is controlled. Because arrow keys does not seem to be of use in the real-time gameplay, i didn't quickly realized i had to use them to control the other parts of the puzzle, and i was thinking that i need to achieve something in the first part to be able to change the second "triangle" etc. Some small indication would help avoid having a noob player like me trying to figure out why i cannot move the other part of the puzzle xD.
Keep up the good work :)!!