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