Paths of Darkness / Legend of Drizzt 11-13 by R.A. Salvatore
The 3-book set of mass market paperback novels includes the below titles:
The Silent Blade (ISBN 9780786950546): Can the Crystal Shard be destroyed at last?
Drizzt is determined to destroy the evil Crystal Shard, and seeks out the help of the scholar-priest Cadderly. But instead, his worst fears are realized, and Crenshinibon falls into the hands of the dark elf mercenary Jarlaxle and his unlikely ally Artemis Entreri. Loss of empathy might well be the most enduring and deep-cutting scar of all, the silent blade of an unseen envemy, tearing at our hearts and stealing more than our strength. –Drizzt Do’Urden
The Spine of the World (ISBN 9780786951079): Spending time in the unimaginable torture chambers of the Abyss for even a day would be enough to break even the heartiest soul, and the barbarian Wulfgar was there for years. When he returns, his friends find him a changed man, and not changed for the better. But Wulfgar’s road to redemption is one he must travel on his own, even if it leads to the bottle.
Sea of Swords (ISBN 9780786951215): The mighty warhammer Aegis-fang has found its way into the hands of the wicked pirate captain Sheila Kree, and Wulfgar is hot on her trail. When Drizzt and his companions leave Mithral Hall in search of Wulfgar, they find themselves on the trail of the warhammer as well, a trail that will lead them to a startling reunion, and the last battle for the heart and soul of Wulfgar.