Rise My Pretties- As Ah Puch release 100 Zombies in one match.
This is super easy. All you have to do is summon in 100 zombie corpses in one game. I did this in arena with plenty of time left. If you feel like you cant achieve this go into a Joust or Conquest game since those game modes tend to be much longer than a arena game. You can also focus on items that reduce your cool down time for your abilities to get it done faster. Good luck.