I'm sorry if you found it too difficult. I am about to release a new version (v1.1) with a difficulty selector that makes the game a bit easier in terms of time. Nevertheless, thank you very much for your feedback; every constructive critique is very helpful to me.
Now you have version 1.3 with a Relaxed mode where there is no time limit to finish each scene. I hope you find it more to your liking. Thank you very much.