You can't kill unkillable knights without spell you'll get later, it's a "stealth-mission"
Lucilla mines are AFTER entire Hiberheim location (Last boss will drop staff, you need put this staff into forge on north of Hiberheim and Fire ele will give you item to unfreeze Witch)
For troll king you need spell from mage, mage hideout is north of "goblin willage waypoint" and hidden.
Spiders are after Lucilla mines, they're strong
