Hi. Great game. I couldn't understand very well levels 3 and 4, but maybe that's on me. After a few replays, I managed to complete it.
I just wish I understood better what was exactly happening on level 3 (I heard the clock tick while pressing the keys, which was confusing), and I completed level 4 with some trial and error since I didn't fully understand it from the explanation.
Besides this, it's a good experience.