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