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