Nice use of 3D models for a non-traditional shooting game! I enjoyed the low-poly aesthetics and the snappy response of the lawn mower. In terms of emotion I mainly felt fear and anxiety throughout, especially as the bulls were a lot bigger than the player.
Gameplay wise, I could not get past the 2nd level as the difficulty jumped up exponentially. I would consider either lowering the amount of bulls per line, slowing their speed, or making their hitboxes smaller. This way I'd be able to experience more of the game and not get as frustrated early on.