Here is the full list of all 73 Ryse: Son of Rome achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Complete False Gods.
Complete Invictus.
Defeat 25 Enemies In A Row Without Sustaining Damage.
Unlock All The Rewards Of The Gods.
Perform 1000 Executions In Multiplayer.
Collect All The Chronicles.
Collect All The Vistas.
Collect All The Scrolls.
Get In Combat With All Executions And Upgrades Purchased.
Survive For 7 Minutes In Firestorm (Survival Mode).
Complete 20 Multiplayer Campaigns.
Complete The Son Of Rome On Legendary Difficulty.
Complete The Wrath of Nemesis On Legendary Difficulty.
Complete Pax Romanum On Legendary Difficulty.
Complete Beacon.
Complete Barbarous.
Unlock The First Reward Of The Gods.
Perform 50 Double Executions In Any Game Mode.
Survive For 7 Minutes In Dockyard (Survival Mode).
Equip Your First Rare Item In Multiplayer.
Equip Your First Tier 2 Item In Multiplayer.
Complete Edge Of The World Legendary Any Difficulty.
Use An Execution To Set Fire To An Enemy.
Complete The King On Legendary Difficulty.
Complete A Comic Book By Collecting 6 Chronicles In A Level.
Complete Trial By Fire On Legendary Difficulty.
Survive For 7 Minutes In Courtyard (Survival Mode).
Play A Round Of Survival On Island.
Play A Round Of Survival Mode.
Defeat 100 Enemies In Multiplayer.
Complete S.P.Q.R. On Legendary Difficulty.
Complete Your First Multiplayer Campaign.
Revive Another Player 3 Times.
Perform A Co-op Execution.
Use A Trap To Kill An Enemy.
Complete The Beginning On Legendary Difficulty.
Replay Any Single Player Level.
Complete The Game on Any Difficulty.
Complete The Game On Soldier Difficulty.
Complete The Game On Centurion Difficulty.
Complete The Son Of Rome On Any Difficulty.
Defeat Boudica.
Complete The Wrath Of Nemesis On Any Difficulty.
Defeat Commodus.
Become The Righteous Hand Of Vengeance.
Complete Pax Romanum On Any Difficulty.
Find Out What Really Happened To Your Parents.
Complete Edge Of The World On Any Difficulty.
Defeat Glott.
Complete The King On Any Difficulty.
Meet Boudica.
Complete Trial By Fire On Any Difficulty.
Perform 100 Executions In Any Game Mode.
Complete S.P.Q.R. On Any Difficulty.
Defeat 10 Enemies In A Row Without Sustaining Any Damage.
Collect One Chronicle.
Collect One Scroll.
Perform Your First Environmental Execution.
Find Your Mother And Sister.
Complete The Beginning On Any Difficulty.
Purchase And Use An Upgrade In Combat.
Meet Nero.
Collect Your First Vista.
Perform Your First Combat Execution.
Kill An Enemy By Perfectly Deflecting An Arrow.
Fight On Each Multiplayer Arena Environment.
Achieve Rank 100 In Multiplayer.
Equip Your First Tier 5 Item In Multiplayer.
Equip Your First Tier 6 Item In Multiplayer.
Achieve Rank 150 In Multiplayer.
Perform 30 Environmental Executions On Island.
Perform 30 Environmental Executions In Forbidden Forest.
Achieve Rank 200 In Multiplayer.