This is fantastic!
Very polished, I loved the music and the wonderful art of that little sand mage and the sand reload animation was great too, they totally set the right mood for the game, it fits the theme perfectly and the puzzles were challenging, they made me think and I felt really good solving the levels and making it to the end, kinda had like "what if the old DOS games were created today" type of cool vibe.
This is my favorite type of game and I really really enjoyed it, amazing job! :)