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