Love the whole idea of the game, it's so unique and has its own identity. The music and art are also great and the movement is well done.
The goal of 100 sheep is pretty low because in just two easy mode rooms i already had over 120 sheep and beat the game super quickly and easily. Making it a higher goal and making the challenge increase overtime is the biggest feedback I can give. Since in the last easy room I did, there was just a single rotating blade moving at the bottom of the screen and there was zero challenge.
Also when i beat the game and entered the door on the left to replay it, I couldn't get through the next door for some reason.
Lastly i think when a rotating blade is about to spawn, letting us know the direction it's about to move in would be a great help.
But yeah the game has a great art style, is super intuitive and simple to understand, and has a lot of potential for improvement!