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