The Two Swords by R. A. Salvatore

As The Two Swords begins, newly ressurected dwarven King Bruenor Bruenor Battlehammer and his subjects are sealed in Mithral Hall. Beyond their gate lies the slavering orc army of King Obould Many Arrows, who schemes beyond the mere death of dwarves and seeks to establish an honest-to-Gruumsh kingdom--the Kingdom of Dark Arrows--at the foot of Mithral Hall. Meanwhile, the dark elf Drizzt Do’Urden still believes his dear companions dead and seeks to exact his vengeance on the mighty orc king.