Here is the full list of all 86 Astral Ascent achievements.
Start 30 escape attempts
Reach the Red Barrens
Reach the Coral Archipelago
Reach the Crimson Highlands
Reach the Event Horizon
Upgrade a spell to level 10
Equip 4 affinity gambits on a spell
Equip an Astral Aura
Equip an Astral Gambit
Reach level 12
Buy all items from an Itinerant Peddler
Success a Zodiac Challenge
Obtain 5 Echoes in a run
Obtain 1000 Quartz in a run
Use 200 Stars in a run
Open 150 Key Chests
Equip a Zodiac Spell in The Moon Room
Change a Spell affinity in The Sun Room
Meet Chamaeleon
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
Captured 5 Astral Spirits
Summon a Zodiac to support you
Perfect 30 Fight Rooms
Reach 1000 damage in one combo
Use your Signature Spell 500 times
Reach the Garden
Unlock Zim-Zim
Unlock the Peddler
Unlock Sire Bapy
Unlock Barbecue
Unlock Papa Yalee
Unlock Oloon
Unlock Octave
Unlock Calie
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 Taurus
Defeat Virgo
Defeat Capricorn
Defeat Aries
Defeat Sagittarius
Defeat Leo
Defeat Pisces
Defeat Scorpio
Defeat Cancer
Defeat Libra
Defeat Aquarius
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 Lupus
Defeat Draco
Defeat Hydra
Defeat Monoceros
Defeat Sculptor
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