This feel like an android game you could play on your push button phone in the early 2000s in all the right ways.
Clear and simple art and sound design and very easy to understand gameplay loop.
A lot of people took issue with number 4, but I personaly was trying to roll into it every time, because it brings consistancy to the movement and makes it easy to tell if you can finish the level, or should just restart.
Also undo button, like people have already mentioned would be a great addition.