If you decide to try and complete the career mode, this should come in time. However, if you choose to just get this achievement done then here is what you do:
1. Complete Grasslands 1 and 2 in career mode. These are the tutorials.
2. Play the village bullring, first stop on the career.
3. When the bull comes out, tap
and stand there. As soon as you stand up and equip your cape tap
again. Continue to do this through the entire first and third round.
4. Replay this arena and method until the achievement pops.
If you want to know how many times you have been hit you can look at your stats on the career mode menu.