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