Here is the full list of all 86 Astral Ascent achievements.
Trigger 12 dialogues on Benches
Unlock Kiran’s ending
Obtain 5 Echoes in a run
Unlock Ayla’s ending
Collect all memory fragments for Papa Yalee
Unlock Calie’s ending
Success an escape at Destiny Level 15+
Reach level 12
Your Zodiac sign helps you 3 times
Use your Signature Spell 500 times
Open 150 Key Chests
Unlock all Oloon colors
Defeat Scorpio
Defeat Scorpio at Destiny Level 6+
Collect 100 Destiny Fragments
Defeat Libra
Defeat Libra at Destiny Level 6+
Unlock Octave’s ending
Face The Master
Defeat The Master at Destiny Level 6+
Defeat Hydra
Defeat Pisces
Defeat Pisces at Destiny Level 6+
Defeat Capricorn at Destiny Level 6+
Defeat Capricorn
Defeat Gemini at Destiny Level 6+
Defeat Gemini
8 stones of each type equipped simultaneously
Defeat Sagittarius
Defeat Sagittarius at Destiny Level 6+
Defeat Pegasus
Defeat Leo
Defeat Leo at Destiny Level 6+
Defeat Sculptor
Defeat Virgo
Defeat Virgo at Destiny Level 6+
Equip an Astral Gambit
Reach the Event Horizon
Defeat Aquarius
Defeat Aquarius at Destiny Level 6+
Defeat Draco
Reach the Crimson Highlands
Equip a Zodiac Spell in The Moon Room
Defeat Cancer
Defeat Cancer at Destiny Level 6+
Use 200 Stars in a run
Obtain 1000 Quartz in a run
Reach the Coral Archipelago
Defeat Aries
Defeat Aries at Destiny Level 6+
Equip 4 affinity gambits on a spell
Defeat Monoceros
Change a Spell affinity in The Sun Room
Reach the Red Barrens
Equip an Astral Aura
Defeat Taurus
Defeat Taurus at Destiny Level 6+
Unlock all Zim-Zim abilities
Defeat Lupus
Start 30 escape attempts
Upgrade a spell to level 10
Success a Zodiac Challenge
Meet Chamaeleon
Save all Yalees from the Kingdom
Captured 5 Astral Spirits
Summon a Zodiac to support you
Perfect 30 Fight Rooms
Reach 1000 damage in one combo
Unlock Zim-Zim
Unlock the Peddler
Unlock Sire Bapy
Unlock Barbecue
Unlock Papa Yalee
Unlock Oloon
Unlock Octave
Unlock Calie
Find the hidden nest in the Garden
Defeat 30 Star Guardians
Unlock the Path of Destiny
Reach the Garden
Unlock all Auras from Barbecue
Unlock all spells from the Peddler
Complete 50% of Sire Bapy’s achievements
Buy all items from an Itinerant Peddler
Activate all abilities of the Void Catalyst at once
Upgrade a spell to level 15