Here is the full list of all 86 Astral Ascent achievements.
Open 150 Key Chests
Captured 5 Astral Spirits
Obtain 1000 Quartz in a run
Defeat Cancer
Unlock the Path of Destiny
Find the hidden nest in the Garden
Face The Master
Defeat Libra
Upgrade a spell to level 10
Use your Signature Spell 500 times
Perfect 30 Fight Rooms
Reach 1000 damage in one combo
Equip 4 affinity gambits on a spell
Defeat Pisces
Reach the Event Horizon
Defeat Gemini
Equip an Astral Gambit
Reach the Crimson Highlands
Defeat Scorpio
Defeat Aries
Summon a Zodiac to support you
Defeat Hydra
Success a Zodiac Challenge
Defeat Pegasus
Unlock Calie
Equip a Zodiac Spell in The Moon Room
Defeat Leo
Change a Spell affinity in The Sun Room
Meet Chamaeleon
Unlock Octave
Unlock Barbecue
Reach the Coral Archipelago
Defeat Sagittarius
Defeat Capricorn
Defeat Draco
Unlock Oloon
Unlock Papa Yalee
Start 30 escape attempts
Unlock Sire Bapy
Equip an Astral Aura
Defeat Virgo
Defeat Monoceros
Reach the Red Barrens
Defeat Taurus
Unlock the Peddler
Unlock Zim-Zim
Reach the Garden
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
Defeat Aquarius
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 Lupus
Defeat Sculptor
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