Echo is certainly a well crafted game and seems a nice homage to Little Nightmares by design. For something made in a month's time, the graphics and models were all pretty solid, with the textures and lighting working really well to keep a semi-realistic dreamworld in the player's eye. The mechanic of using a shadow in the water to help solve problems also worked pretty well, feeling rewarding once you figure things out. I'm normally not the best at puzzle games, but found this one enjoyable.
Good job on this, devs.