Here is the full list of all 67 Fictorum achievements.
Cast 500 Lightning Spells in a Single Playthrough
Complete Fictorum as the Eternal Winter
Unlock the Titanic Starting Title
Use each type of rune in the game at least once
Unlock the Twilight Maelstrom Starting Title
Unlock the Bulwark Starting Title
Complete Fictorum as the Frost-bound
Complete Fictorum on Expanse mode
Unlock the Earthmolder Starting Title
Unlock the Coiled Wyvern Starting Title
Unlock the Vulnerable Starting Title
Unlock the Verdant Incinerator Starting Title
Complete Fictorum as the Starcaller
Complete Fictorum on Hard
Complete Fictorum on Nightmare
Complete Fictorum on Hardcore
Complete Fictorum on Abridged mode
Unlock the Voidbringer Starting Title
Cast 500 Ice Spells in a Single Playthrough
Cast 500 Fire Spells in a Single Playthrough
Unlock the Eternal Winter Starting Title
Reach Chapter Nine
Cast 500 Abilities in a Single Playthrough
Defeat the Grand Inquisitor
Unlock the Starcaller Starting Title
Unlock the Ascended Starting Title
Complete Fictorum as the Firebrand
Complete Fictorum on Reese Mode
Complete Fictorum on Easy
Complete Fictorum on Normal
Complete Fictorum on Classic mode
Unlock the Soaring Arrow Starting Title
Reach Chapter Eight
Defeat Giama, the Master Summoner
Unlock the Veiled Tarragon Starting Title
Defeat Caeleste, the Angel of Wind
Unlock the Battlemage Starting Title
Defeat Brazmek, the Earth Golem
Have more than 10 spells in your inventory at once
Reach Chapter Five
Unlock the Infinite Dragon Starting Title
Defeat Balmur, the Frost Giant
Damage 500 Buildings in a Single Playthrough
Defeat Ventas' Favored
Defeat Rintara, the Archmage
Unlock the Giftbringer Starting Title
Complete Fictorum as the Tempest
Complete Fictorum as the Infinite Dragon
Complete Fictorum as the Twilight Maelstrom
Complete Fictorum as the Veiled Tarragon
Complete Fictorum as the Coiled Wyvern
Complete Fictorum as the Ascended
Complete Fictorum as the Battlemage
Complete Fictorum as the Vulnerable
Complete Fictorum using only Fire Spells (Untranscribed abilities are okay)
Complete Fictorum using only Ice Spells (Untranscribed abilities are okay)
Complete Fictorum using only Lightning Spells (Untranscribed abilities are okay)
Complete Fictorum using only Corrupted Spells (Untranscribed abilities are okay)
Complete Fictorum using only Wind Spells (Untranscribed abilities are okay)
Complete Fictorum using only Earth Spells (Untranscribed abilities are okay)
Complete Fictorum using only Physical Spells (Untranscribed abilities are okay)
Complete Fictorum using only Arcane Spells (Untranscribed abilities are okay)
Have a unique item in every equipable slot
Cast each spell in the game at least once
Unlock the Chronomancer Starting Title
Unlock the Thunderborn Starting Title
Unlock the Bottom of the Barrel Starting Title