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