The Eastern Tunnels

A complete walkthrough for Shadows of Doubt's Eastern Tunnels, detailing how to escape captivity, defeat enemies, and find valuable loot like the Hilt of the Equalizer.

Walkthrough:

1. Upon entering the Eastern Tunnels, you will be captured and thrown into a cell. Consider casting Chaotic Commands on a front-line fighter.
2. Your ogre jailer will inform you that you are to fight for the Mind Flayers. Question him, then prepare to fight three Umber Hulks.
3. After defeating the Umber Hulks, you'll be returned to your cell and given five Potions of Extra Healing. Open the other cell door to speak with Simyaz and his Githyanki crew.
4. Simyaz explains they were captured while seeking a stolen silver blade. They plan to create a psionic disturbance to allow your escape and free other captives.
5. Your jailer will inform you that your group and Simyaz's crew are to fight next. You'll find yourselves in the arena with Simyaz's crew and Kuo-toa.
6. Defeat the Kuo-toa. Then, pick the lock on the door leading back to the prison area.
7. The jailer is hostile but a straightforward melee attacker. Defeat him and search the table for the Hilt of the Equalizer.
8. The northern passage leads to two locked doors. In a wall niche, find Methild's Harp, which can remove stun effects. Return to the prison room.
9. Optionally, pick the locks to other cells: the top contains a Sahuagin Prince and Baronial Guard, the bottom contains two Kuo-toan Warriors.
10. Proceed east. Scout ahead as a Mind Flayer is in the room. Another will replace it after a short time, allowing for XP grinding.
11. Interact with a vat to acquire Illithid Serum.
12. Return to the prison room and go south. Defeat the two Mind Flayers in the next room.
13. In the room with nine unconscious slaves, use the Illithid Serum on one of them three times to wake them.
14. The slaves' leader explains their situation. Use the machine on the left to create four Control Circlets before it runs out of power.
15. Equip a Control Circlet and return to the room where you acquired the Illithid Serum. Use the circlet on the waiting Mind Flayer to control it.
16. Go to the northern room where you found Methild's Harp. Have the controlled Mind Flayer approach the western door; it will open.
17. Defeat the now-hostile Mind Flayer. Simyaz and his crew will teleport in and depart. Each party member receives 25000 XP.
18. The area exit is now accessible but blocked by the Master Brain's lair. Go west.
19. The next room contains Umber Hulks, Mind Flayers, and Ulitharids. A Cloudkill spell can be effective against the Umber Hulks and damage the magic-resistant Mind Flayers. Mop up survivors, using summoned allies as shields and withdrawing from