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