Here is the full list of all 22 Valcarta: Rise of the Demon achievements.
Begin the Path of Light
Begin the Path of Darkness
Complete the events within the Ritual Caves whilst on the Path of Light
Complete the events within the Ritual Caves whilst on the Path of Darkness
Recieve the Tent from the Old Man in Crovinale
Complete Tekka's end-game side quest within the Fairy Forest.
Complete Carter's end-game side quest within Sleemonburg
Collect Seraphim's end-game equipment from Hyperion's Shrine
Defeat Medusa at the Deathroot Tree (Path of Light only)
Defeat Crag Maw at the Frostless Mountain (Path of Light only)
Defeat Necrophitites on Shu's Island (Path of Light only)
Defeat Bel'El within the Caverns of the Forlorn (Path of Light only)
Defeat Kroten'Krol within the Void Walk (Path of Darkness only)
Defeat Tiamat within the Crovinale Gold Mine (Path of Darkness only)
Defeat Khimera within the Web Wood Forest (Path of Darkness only)
Defeast Bel'El within the Caverns of the Forlorn (Path of Darkness only)
Complete the events with Morgana at the Shadowsoul Camp (Path of Darkness only)
Complete the events within Shiva's Crystal Room (Path of Darkness only)
Collect Alrinya's equipment from Synkale's Shrine (Path of Darkness only)
Successfully complete the Path of Darkness without having a Game Over
Successfully complete the Path of Light without having a Game Over
Complete both the Path of Darkness and the Path of Light and all of the character quests and optional bosses.