Cool concept and artstyle! Would really help if there were a few hints on the gameplay. I could solve the first puzzle, but got stuck on the second one. Some of the sound effects used are good, but the footsteps one is a bit intrusive. Would have loved to have a nice atmospheric soundtrack to this, to elevate the vibe of the game.
Overall, i feel that it needs polish especially on the UI and controls, but you have a good start and foundation for a nice puzzle game, well done!