Here is the full list of all 74 Middle-earth: Shadow of Mordor - there are Game of the Year Edition achievements worth 1,680 gamerscore.
Issue a Death Threat, and then successfully kill the target.
Complete all Outcast Rescue Missions.
Defeat all the Beastmaster Warchiefs.
Have a dominated Caragath, Wretched Graug and Spitter Ghûl simultaneously.
Activate the Blazing Steed.
Have 20 Branded Ghûls at one time.
Catch a Ghûl Matron on fire during the Lord of the Hunt campaign.
Liberate 30 slaves in 180 seconds while riding a caragor.
Bait 10 Ghûl mounds.
Eat a captain with a Wretched Graug.
Use a Wretched Graug's Projectile Vomit on an Uruk Captain or Warchief.
Complete 25 Caragath Stealth Kills.
Kill a Caragath with an Execution.
Begin a new hunt with Torvin.
The One Ring has returned to it's Maker.
Kill all 5 Warchiefs before any uruk take their place.
Maximize the power of the Ring by completing all of the One Ring missions.
Brand 20 Uruks in 60 seconds.
Build all the Forge Towers in Udun.
Wraith Flash Dominate 50 Uruks.
Challenge the Dark Lord in Mordor.
Shadow Brand 20 Uruks.
Kill The Black Hand.
Kill The Tower.
Successfully complete 4 Hunting Challenges.
Save Lithariel's life.
Brand all 5 Warchiefs.
Start a Riot by commanding a Warchief to attack another Warchief.
Complete all Urfael Legend Missions.
Lift Lady Marwen's curse.
Brand a Captain while in combat.
Complete all Azkâr Legend Missions.
Complete all Acharn Legend Missions.
Kill the Great White Graug.
Collect 100% of the Artifacts and listen to their memories.
Complete all Survivalist Challenges.
Collect 100% of the Ithildin.
Activate all Forge Towers.
Kill The Hammer.
Destroy the Monument Gate and topple the statue of Sauron.
Capitalize on a Warchief's Fear.
Eliminate the bodyguards of two Warchiefs, then draw them out and kill them.
Poison a Captain at his own Feast.
Get Ratbag promoted to Warchief.
Witness the creation of The Rings of Power.
Collect 50% of the Ithildin.
Free 5 caragors from cages.
Use the Detonate ability to burn 50 uruks.
Make 20 uruks flee by dropping Morgai Fly nests.
Unlock 4 Dagger Rune slots.
Collect 25% of the Artifacts.
Complete a Vendetta Mission.
Attract caragors with bait 5 times.
Complete an Outcast Rescue Mission.
Complete a Sword Mission and begin growing the legend of Urfael.
Use Strike From Above while at least 60 feet above your target.
Unlock 3 Sword Rune slots.
Unlock 2 Bow Rune slots.
Complete a Bow Mission and begin growing the legend of Azkâr.
Discover some of the Wraith's past.
Complete a Dagger Mission and begin growing the legend of Acharn.
Successfully complete a Survivalist Challenge.
Make an uruk yours.
Acquire a level 25 Rune.
Get a Level 30 Rune in Test of the Ring.
Perform an Execution on a flaming Berserker.
Stealth Brand a Captain.
Kill a Graug by dispatching your Ghûls on him.
Complete all objectives in the Test of The Ring.
Complete all Hunting Challenges.
Help a Captain survive a Recruitment Power Struggle, and then kill him and all his new recruits.
After an uruk kills you to become a Captain, help him become a Warchief, then kill him.
Brand 5 Bodyguards of a Warchief, turning them against him in combat.
Complete all objectives in the Test of the Wild.