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