Here is the full list of all 94 Raiders of the Icepeak Mountains achievements.
Defeat an orc shaman in combat.
Defeat an orc chieftain in combat.
Kill a dragon.
Fight an ogre.
Defeat a ghost.
Fight a mummy.
Demolish a statue.
Overcome a warlock.
Send a demon back to hell.
Kill a giant dam-building animal.
End an orc clan.
Killed an elite orc guard.
Overcome an elite orc guard.
Fight the keeper of rats.
Defeat a water elemental.
Fight a salamander.
Defeat the queen of rats.
Kill a giant scorpion.
Reach level 2.
Reach level 3.
Reach level 4.
Reach level 5.
Reach level 6.
Reach level 7.
Find a small stash of gold.
Search for gold among the dung.
Spare the clergy of Kathos.
Rescue a prisoner.
Find the Conqueror's Sword.
Find the Diadem of Justice.
Find the Ring of Plenty.
Find a map to the tomb of an ancient emperor.
Explore a tomb situated inside a town.
Help finish building a temple.
Loot the Crypt of the Fallen.
Destroy a magic tree.
Achieve a score of 10,000
Achieve a score of 20,000
Achieve a score of 40,000
Achieve a score of 80,000
Achieve a score of 120,000
Achieve a score of 160,000
Achieve a score of 200,000
Achieve a score of 300,000