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