Like hankworx, I haven't found the last stone yet (the rightmost one in the indicator). Is there anything to the boot in the water? I quite like how this is (to me) much more adventurey than your previous entries.
the boot is just a silly Easter egg lol, but no there is no walkthroughs (guess I should make one). The last stone which I believe is the light stone, has a puzzle, all the clues should be in the game to solve it. Also thanks, I wanted to make and try out a more traditional adventure game this year