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