An interesting simple game loop. Though a bit weird in how you interact with it since I'm not entirely sure what the limiting factor on the hammer speed, and the "cooldown" on the red block is. Since it, to be fair, felt, somewhat random, but more likely was just a hidden timer. Which definitely made it a lot more difficult to try and strategize due to not knowing when anything was going to happen or be available.
Besides that weirdness though, it was a bit unclear as to what to do, besides obviously trying to distract the bull, there's nothing making it clear, at least to me, that the point is to make the bull go backwards. I had a few runs where I just placed the red block in front of the bull, expecting it to get mad at it and stop for a second, which was not what happened. That was my own assumption there.
Though once I figured out that I just had to put it behind it, it became relatively simple, almost too simple, since I was also clicking the same place, and pretty much just at the mercy of the timers.
It is a nice setup a very good art style though, especially for less for than 3 hours of dev time. Voxel stuff is no joke and it has a fun reason for the game loop as well. Well, minus the giant hammer, but ya know every game has a giant hammer.