I agree with the previous review that this feels very suited for a more mobile gaming experience. The controls feel just right for an idea like this though, there is a weight to each button press that almost makes you want to physically lean in the direction you want to go. That, plus the balance of managing the player and the enemy, makes for an interesting push and pull.
It wasn't immediately clear to me how the elements on the screen interacted with each other - like how the first red square you see is an "enemy" that shouldn't be touched by the player. I would also agree to get rid of the lives! I wanted to see more of the puzzles, but the touchiness of the collisions leaned on frustrating when it meant I had to start from scratch. With a foundation like this, I feel like you have the ability to make a lot of interesting levels - even better if you can paint it with some type of visual aesthetic (though not necessary!)