A bit too repetetive. I'd love to see some secondary mechanic like lassoing bulls together via RMB or something similar.
Juice-wise the hits don't feel very impactful (mainly due to the sfx) and there isn't much feedback on how strong of a hit you dealt.
Also I think adding more bulls to a level doesn't really make it harder, just make it last longer. Probably should have played around with making the levels feel tighter so there's less space for dodging which would definitely raise the difficulty.
Overall the idea is still pretty good and I like the bull's movement patterns a lot.