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