(I don't know your language, so please just throw my text at google translate so you understand it) x)
*Ahem*
That's pretty simple, but it does get the work done. The art is also fine and the character is adorable, so I'll give it that.
The music is also way better than I was expecting, did you do it yourself? If so, then congrats!
I like the idea of the hidden keys, it does give an interesting puzzle aspect to the game. however most of them are hidden very poorly, you have to either kill yourself at least once or throw the character at walls until one of them isn't solid to be able to find them. You should have added something subtle to hint the player where those secrets are. (the famous telegraphs!)
Also, there's a lot of blind jumps, don't make levels where the player can't see what's below them.
Viewing post in No Way Back jam comments
Thanks! Yes I’m Write This Music. So I’m Make A New Update To This Game. Because This Version Is Very Bad Because I’m Do This Game In 3 Days x). In Update A Add New Interesting Levels And Secrets. Yes Most of Keys are hidden very poorly. Maybe I’m Add New Locations Of Keys In Game. Thanks For Reply😊!