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