Here is the full list of all 49 Asterigos: Curse of the Stars achievements.
Complete All Achievements
Complete A Round of Game With Level 20 or Lower
Witness Minerva's Sacrifice
Witness Minerva's Determination
Defeat Eumenides
Upgrade Three Weapons To Max Level
Open All Treasure Chests
Collect All Echoes
Activate All Conduits
Upgrade Four Enhancements To Max Level
Complete All Trinity Challenges
Defeat Pallas
Defeat All Teumess
Defeat All Mimics
Defeat Wassily
Defeat Hiems
Defeat Astraix
Defeat Soleucus
Defeat Kavouras
Upgrade An Enhancement To Max Level
Defeat Miltos
Defeat Doron
Defeat Anagnos
Defeat Breathless
Progress To The Event of Trinity
Read 250 Discoveries Documents
Collect At Least 20 Craftable Trinkets
Collect All Scores
Finish Otto's Last Resort Quest
Finish the Loser Noble Quest
Finish Bion's Dogtags Quest
Defeat the Black Warden
Defeat All Hellhounds
Activate the Bridge to the Depths
Defeat Marble
Defeat Andreas
Gain Starlight's Trust
Upgrade A Weapon To Max Level
Defeat Avatar of Titan
Progress To The Event of The Laurel Craft
Defeat Bion In The Final Training
Defeat Colossi
Open 50 Treasure Chests
Read 100 Discoveries Documents
Defeat Garrison
Defeat Eulalia
Defeat Baraad
Defeat Raveneous
Retrieve All Weapons