Here is the full list of all 49 Hades achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Earn the second of Skelly's prizes
Purge a Legendary Boon
Earn the first of Skelly's prizes
Reach the epilogue of the story
Max-rank each standard Keepsake
Clear Elysium with the 'Extreme Measures' Condition
Earn all Chthonic Companions
Fulfill the 'Harsh Conditions' Prophecy
Fulfill the 'Night and Darkness' Prophecy
Fulfill the 'War-God's Bloodlust' Prophecy
Fulfill the 'Slashed Benefits' Prophecy
Unlock all Weapon Aspects
Get 20% dodge chance with the Lambent Plume
Get 30% bonus damage with the Pierced Butterfly
Fulfill the 'Divided by Death' Prophecy
Clear an Infernal Gate without taking damage
Use an Olympian's Greater Call against them in a Trial
Fulfill the 'End to Torment' Prophecy
Fully Unlock the Olympians' Codex entries
Fulfill the 'Musician and Muse' Prophecy
Fulfill the 'Dark Reflections' Prophecy
Clear an escape attempt with a hidden Weapon Aspect
Fulfill the 'Master of Arms' Prophecy
Forge a bond with any character
Unlock each standard Keepsake
Equip a Chthonic Companion
Have at least one rank in each Mirror of Night Talent
Complete the main quest in the story
Max any Weapon Aspect
Catch a fish from each region
Choose 50 different Daedalus Hammer enchantments
Fulfill any 15 Prophecies
Pay for 50 jobs from the House Contractor
Earn a Loyalty Card
Compel Orpheus to sing again
Slay Skelly 15 times
Clear an escape attempt
Choose 100 different Olympian Boon effects
Earn access to and enter the Administrative Chamber
Beat Thanatos by 15 kills or more
Trade 20 times with the Wretched Broker
Clear Elysium
Unlock each of the Infernal Arms
Pet Cerberus 10 times
Fulfill the 'Chthonic Colleagues' Prophecy
Use Greater Call to invoke an Olympian's aid
Buy 9 'Well of Charon' items in one escape attempt
Clear Asphodel
Clear Tartarus