Note: pleaaaaaaase no zxc shenanigans, not all keyboard have their keys placed that way (in my case, z and y are reversed), it's annoying to always need to change the keyboard layout
Like the other feedbacks, the game felt confusing to me. I never get to manage to end the first level.
These type of games (where the player has a time clone to manage platforms) are already puzzle on their own and not always easy. This takes it in such a higher level of confusion that it's wayyyy too hard to master for beginners. It's unique, at least. But I had such a haaaaaard time to figure out what I was supposed to do to get the correct movement workings. The character moving backwards forces you to think backward on a puzzle system that already isn't the most simple to solve.
A tutorial or more simple first levels would probably have helped a lot (you need patience to figure out that the characters are doing something you didn't expect: they move backwards instead of forward; even if a text tells you this, we always need to test it to actually figure out the controls)
Too bad cause it made the game feel frustrating to me but I really would have liked to go deeper :(
A difficulty trick: keep in mind players who never played your game will never be able to play better than you. Always push the difficulty down when it feels "normal" to you in the first levels. It should feel pretty easy. The game will always be easier for the one who coded it :p
That said, the music and sounds are nice, the visuals are cute and I like that there is this type of duality. The difficulty is what made it difficult to enjoy for me :/