Here is the full list of all 9 Stellar Bewitching (Remastered) achievements.
Elya has transformed into a Magical Girl!
Floryn has joined the party!
Pokie has joined the party!
Ivan has joined the party!
Defeated Sedrick!
Finished with Pokie's Evil Ending (Normal End)
Unlocked Pokie's Redemption Ending
Found the Yuriellian Quartz
Defeated Optional Boss Battle - Misha