Classic platforming can never go wrong, but perhaps some optimizations can be made for the player's expected behavior. Like that puddle which can add blood, it's a little inconspicuous in the dark scene, and it's impossible to guess its purpose until you touch it (I even thought it was a decorative element). Generally speaking, it has a very high degree of completion for the production scale of one person, and maybe the content can be expanded on this basis in the next production, because the story setting is interesting.