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