Orc champions are the elite fighting force of the goblinoid horde, equipped with heavy armor.
Use Mages, since they have high armor rating. Upgraded artillery work well for groups.
Try to get a Sorcerer Mage with a rock elemental at the very end, right next to Arcane Wizards and Big Berthas. This will allow a death pit where orc champions can be insta-killed, blew up, or teleported away from the trap allowing more damage to be done to it.
- They also later appear in the same stage on top of Worgs and these are the very annoying to kill Worg Riders