Lamzakha is an Orc student and a possible target for the Black Sacrament given by Speaker Terenus. She is a low-level dealer for a skooma cartel. Lamzakha recently made off with a king's ransom after a "botched transaction", and her employers want her dead.
Lamzakha is located in a secret room in the middle-north section of the map. Head out of the entrance area. turn right up the big stairs in the first room with NPCs in it. Head straight through the tunnel at the top of the stairs and continue past the bar at the exit of that passageway. Go straight past the bar onto the next platform. Head to the back of that section and turn right. There's a tunnel covered by growing vines at the eastern edge of that section of the northern room. You're going to need to jump in order to access it. Jump to the hidden room and head through the tunnel, which leads to a room with Lamzakha in it.
- Sacrament: Sewer Tenement: Carry out a contract in an inhabited sewer system.