Here is the full list of all 55 Ortharion project achievements.
Kill the Skeleton Lord in the Cave of Granock Forest
Complete the quest serie
Improve the rank of one of your spells.
Improve the rank of one of your spells up to level 2
Improve the rank of one of your spells up to level 3
Improve the rank of one of your spells up to level 4
Improve the rank of one of your spells up to level 5
collect Ortharion's fragments
Collect all Ortharion fragments in the specific area.
Kill the Skeleton Lord, present in the Granock cave forest in normal difficulty
Kill the Skeleton Lord, present in the Granock cave forest in divine difficulty
Kill the leader of the forest robbers in the area of forest robbers
Kill the leader of plains robbers in the area of plains robbers.
Kill the leader of mountain robbers in the dungeon of the mountains
Kill the leader of mountain robbers in the dungeon of the mountains in normal difficulty
Kill the leader of mountain robbers in the dungeon of the mountains in divine difficulty
Complete a level 25 dungeon
Complete a level 50 dungeon
Complete a level 75 dungeon
Complete a level 100 dungeon
reach level 10
reach level 25
reach level 40
reach level 70
reach level 101
Complete 150 time the level 100 dungeon
Learn a total of 10 spells on the same character.
Learn a total of 20 spells on the same character.
Learn a total of 35 spells on the same character.
Learn a total of 50 spells on the same character.
Learn a total of 80 spells on the same character.
Kill a total of 1000 monsters on difficulty 50 or higher
Kill a total of 15000 monsters on difficulty 100
In Lone Wolf mode - Complete the main quest of the game in less than 10 hours.
In Lone Wolf mode - Complete the last Arena boss in less than 30 hours.
Complete a level 150 dungeon