I have 3 of them and I got to the 17 floor checkpoint, but at about floor 24 they wear me out. Can anyone tell me what floor the last bull is on and where the next checkpoint is. I’m getting pretty frustrated with this.
That’s the only checkpoint. You may receive the last from a mission egg after the boss on 28, and you may do the mission repeated as many times as you’d like – because this is a special mission.
I just bought eggs 
Lol i didnt even get a single bull n i got to 20 floor
Then you avoided the bosses on 1, 3, and 9.
Since u skiped some i think youll have go in again tomget the last one