Orcs have captured important scholars, who are now prisoners in Eferhild, a fortress known for its ancient magical defenses. Infiltrate the Citadel, rescue as many prisoners as possible, and then kill Kor’dal, the legendary infamous leader of the orcs.
Orc sentinels constantly patrol the premises, so expect confrontation. A defensive Orb periodically shoots arcane energy at unauthorized intruders, so you have got to move fast.