Full list of all 49 Overlord II achievements worth 1,000 gamerscore. It takes around 35-40 hours to unlock all of the achievements on Xbox 360.
Rescue Kelda from Nordberg
Rescue Juno from Everlight
Corrupt Queen Fay to turn her into Dark Fay
Kill Dark Fay to turn her into Ghost Fay
Complete full Tyranny over Nordberg through either Domination or Destruction
Complete full Tyranny over Everlight through either Domination or Destruction
Buy gifts for Kelda and woo her into becoming your 'special' friend
Kill Solarius
Fully upgrade all 50 Minions in your Horde
Achieve 50 kills by overcharging your Evil Presence Spell
Achieve 50 melee kills
Find the Red Minions
Find the Green Minions
Find the Blue Minions
Build 50% of the Tower buildables
Build 100% of the Tower buildables
Achieve a 100% Domination Tyranny rating
Achieve a 100% Destruction Tyranny rating
Obtain all the Tower Objects in the game
Collect 50% of all Dark Crystals
Collect 100% of all Dark Crystals
Kill 1000 Gnomes
Collect 50,000 gold
Buy gifts for Juno and woo her into becoming your 'special' friend
Kill 15 or more enemies with a single Catapult boulder
Buy gifts for Dark Fay and woo her into becoming your 'special' friend
Buy gifts for Ghost Fay and woo her into becoming your 'special' friend
Win one Pirate Plunder map
Win ten Pirate Plunder maps
Win one Dominate map
Win ten Dominate maps
Kill an opposing Overlord 20 times in ranked versus matches
Forge one weapon
Forged the Elemental helmet and armor
Rescue all the Minion crew from the spider webs
Forge three weapons
Forge the Infernal helmet and armor
Cause mayhem during the Prelude
Gather 10 Lifeforce orbs
Gather 250 Lifeforce orbs
Gather 1000 Lifeforce orbs
Gather 5000 Lifeforce orbs
Discover and use all Minion Mounts in the game
Destroy one Town
Destroy both Nordberg and Everlight
Enslave one Town
Enslave both Nordberg and Everlight
Find a way for you and your three Mistresses to become 'special' friends
Kill 100 baby seals