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 On Island.
Defeat 25 Enemies In A Row Without Sustaining Damage.
Complete The Son Of Rome On Legendary Difficulty.
Complete The Wrath of Nemesis On Legendary Difficulty.
Complete Pax Romanum On Legendary Difficulty.
Complete Edge Of The World Legendary Any Difficulty.
Unlock All The Rewards Of The Gods.
Perform 1000 Executions In Multiplayer.
Complete The King On Legendary Difficulty.
Complete Trial By Fire On Legendary Difficulty.
Complete S.P.Q.R. On Legendary Difficulty.
Complete The Beginning On Legendary Difficulty.
Complete The Game On Centurion Difficulty.
Kill An Enemy By Perfectly Deflecting An Arrow.
Get In Combat With All Executions And Upgrades Purchased.
Complete False Gods.
Complete Beacon.
Complete Invictus.
Complete Barbarous.
Complete 20 Multiplayer Campaigns.
Complete The Game On Soldier Difficulty.
Collect All The Scrolls.
Collect All The Chronicles.
Collect All The Vistas.
Complete A Comic Book By Collecting 6 Chronicles In A Level.
Unlock The First Reward Of The Gods.
Equip Your First Rare Item In Multiplayer.
Equip Your First Tier 2 Item In Multiplayer.
Survive For 7 Minutes In Courtyard (Survival Mode).
Survive For 7 Minutes In Firestorm (Survival Mode).
Revive Another Player 3 Times.
Perform 50 Double Executions In Any Game Mode.
Survive For 7 Minutes In Dockyard (Survival Mode).
Play A Round Of Survival On Island.
Defeat 100 Enemies In Multiplayer.
Play A Round Of Survival Mode.
Perform A Co-op Execution.
Replay Any Single Player Level.
Complete Your First Multiplayer Campaign.
Use A Trap To Kill An Enemy.
Complete The Game on Any 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.
Use An Execution To Set Fire To An Enemy.
Complete The King On Any Difficulty.
Meet Boudica.
Collect Your First Vista.
Complete Trial By Fire On Any Difficulty.
Perform 100 Executions In Any Game Mode.
Complete S.P.Q.R. On Any Difficulty.
Perform Your First Environmental Execution.
Defeat 10 Enemies In A Row Without Sustaining Any Damage.
Collect One Chronicle.
Collect One Scroll.
Find Your Mother And Sister.
Complete The Beginning On Any Difficulty.
Purchase And Use An Upgrade In Combat.
Meet Nero.
Perform Your First Combat Execution.
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 In Forbidden Forest.
Achieve Rank 200 In Multiplayer.