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Chapter seven marks the appearance of Drizzt Do'Urden, the famous Drow Ranger from R.A. Salvatore's Forgotten Realms novels. A cutscene depicts your arrival at Mithral Hall, which offers a small amount of conversation between Drizzt and Zhai about her Drow and Wood Elf heritage. It won't be long, however, before Trolls begin sieging the stronghold, forcing the companions to fight them off alongside Drizzt and his two scimitars. Due to their regenerative nature, Drizzt will tell you to tip your weapons into the brazier coals before using them against the Trolls. The fiery effect will destroy the Trolls for good, but only when used with a Coup de Grace. Your weapon will not burn forever, though, so return to the braziers on a regular basis to ensure you're able to finish off a Troll when it goes down.

The battle will move along the wall of the stronghold up to the mechanical system above the massive wooden door. The Trolls will relentlessly attack the gears, so you must kill them as quickly as possible. When you've cleared a wave of trolls and are waiting for more, use the downtime to break the nearby barrels and loot the gold inside of them. After you've successfully kept the trolls from destroying the gears, you'll be returned to the main gate and will be given control over Drizzt.

Drizzt's scimitars make for some very fast damage, but you're going to need it to keep the army of Trolls from breaching the main gate. After you've finished off enough of the Trolls, you'll then have to escort a dwarf up to fix a broken gear on the opposite side of the wooden door. Keeping the Trolls off the dwarf isn't very hard, so as soon as you get a little break in the fighting, maneuver down the stairs on the left side of the dwarf to find two chests ripe for the plundering. With loot in hand, finish the rest of the Trolls, then return to the main gate to continue defending it.

It won't be long before the Trolls break through the huge wooden door and a wave of the creatures will make an assault on the main gate. Things start getting pretty tough here. Avoid the regular Trolls and dispatch the rock-throwing versions first since they're the ones causing all of the damage to the gate. When your health starts getting low, pay a visit to any of the four chests along the walls to score some healing items. When all of the rock-throwing Trolls have been killed, the creatures wheel in a huge catapult and begin firing boulders at the gate.

By the time the catapult shows up, the gate will most likely be getting close to being breached. Since you must destroy three sections of the catapult (while being attacked by Trolls), you're going to have to move fast. Try to avoid the Trolls as best you can and hack as quickly as possible on the front and two side wooden sections of the catapult until it finally crumbles. When this happens, a huge Troll will emerge from the door and Rannek, Zhai, and Drizzt will have to do battle one last time.

The Troll leader is tough, but at least you won't have to worry about the gate anymore. When the beast renders the character you're controlling helpless (by picking you up and gnawing on your flesh...), quickly switch to one of the other two characters and continue slashing away at it. The battle is very time-consuming, mainly due to the fact that the Troll regains health every time it gnaws on one of the party members. Stick it out and the beast will eventually fall. When it does, Rannek gets his revenge for the attack on Nezme by finishing the Troll once and for all.

At this point, you must part ways with Drizzt. Before you leave, though, the Drow Ranger hands Zhai a Wood Elf Necklace, which allows her to stay hidden from sight even after attacking an enemy. On to Chapter 8!