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