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