Thank you for such a detailed experience about my game, I'm so proud you liked it! I thought about the movement, but in the end it was easier to make a more polished game in 2 days with that mechanic.
I will look for alternatives, maybe increasing the speed at jumping and falling, for a more frantic feeling :)
Regarding with levels dificulty, I tried to strike the balance between difficulty and skill for casual gamer, but will try to balance it in future updates.