Complete each achievement to get the allotted gamerscore.
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War of the Last Alliance (5) --> Complete the training level.

Battle of Helm’s Deep (25) --> Complete the Helm’s Deep level in the single player "War of the Ring" Campaign.

Conquer over Isengard (25) --> Complete the Isengard level in the single player "War of the Ring" Campaign.

The Mines of Moria (25) --> Complete the Mines of Moria level in the single player "War of the Ring" Campaign.

Siege of Minas Tirith (25) --> Complete the Minas Tirith level in the single player "War of the Ring" Campaign.

Battle of Pelennor Fields (25) --> Complete the Pelennor Fields level in the single player "War of the Ring" Campaign.

Assault on Osgiliath (25) --> Complete the Osgiliath level in the single player "War of the Ring" Campaign.

Assault on Minas Morgul (25) --> Complete the Minas Morgul level in the single player "War of the Ring" Campaign.

All's Well as Ends Better (35) --> Complete the Black Gate level in the single player "War of the Ring" Campaign.

Assault on Mount Doom (25) --> Complete the Mount Doom level in the single player "Rise of Sauron" Campaign.

Siege of Osgiliath (25) --> Complete the Osgiliath level in the single player "Rise of Sauron" Campaign.

Fall of Minas Tirith (25) --> Complete the Minas Tirith level in the single player "Rise of Sauron" Campaign.

Battle of Weathertop (25) --> Complete the Weathertop level in the single player "Rise of Sauron" Campaign.

Siege of Moria (25) --> Complete the Mines of Moria level in the single player "Rise of Sauron" Campaign.

Razing of Rivendell (25) --> Complete the Rivendell level in the single player "Rise of Sauron" Campaign.

The Land of Shadow (35) --> Complete the Shire level in the single player "Rise of Sauron" Campaign.

Splintered Shields (15) --> Kill 100 enemies in one life as the warrior.

Blade That Was Broken (15) --> Score 30 hits on the combo counter as the warrior.

Blademaster (20) --> Kill 25 players as the warrior in any ranked match.

Eagle Eyes (15) --> Get 25 headshot kills in one life as the archer.

Rain of Fire (15) --> Kill 25 enemies in one life with the archer's fire arrows.

Marksman (20) --> Headshot kill 10 players as the archer in any ranked match.

A Knife in the Dark (15) --> Use the scout to backstab 10 enemies in one life.

Fire and Slaughter (15) --> Kill 25 enemies in one life with the scout's bombs.

Assassin (20) --> Backstab 10 players as the scout in any ranked match.

House of Healing (15) --> Heal 30 allies in one life as the mage.

Flame of Anor (15) --> Kill 100 enemies in one life with the mage's fire wall.

A Storm is Coming (20) --> Kill 15 players with the Mage's lightning in any ranked match.

Storm and the Lightning (50) --> Score the most points on the winning team in any ranked online match.

A Red Sun Rises (50) --> Kill 30 enemies in a ranked Team Deathmatch match.

Rings of Power (50) --> Capture 3 rings in a ranked Capture the Ring match.

Ride to Ruin (50) --> Capture 10 control points in ranked Conquest match.

Return of the King (15) --> Defeat 3 Nazgul as Aragorn in Minas Morgul ("War of the Ring" Campaign).

You Have My Axe (15) --> Kill 20 enemies with Gimli in any Team Deathmatch game.

You Have My Bow (15) --> Kill 20 enemies with Legolas in any Team Deathmatch game.

I Will Take It (15) --> Capture a ring with Frodo in a ranked Capture the Ring match.

You Shall Not Pass! (15) --> Defeat the Balrog as Gandalf in the Mines of Moria ("War of the Ring" Campaign).

No Living Man Am I (15) --> Defeat the Witch King as Eowyn in Pelennor Fields ("War of the Ring" Campaign).

Lord of Mordor (15) --> Defeat Gandalf as Sauron in the Shire ("Rise of Sauron" Campaign).

Lord of the Nine Riders (15) --> Kill 10 players in one life as the Witch King in any ranked match.

Never Toss a Dwarf (15) --> Defeat Gimli as the Balrog in the Mines of Moria ("Rise of Sauron" Campaign).

The Way of Pain (15) --> Defeat Aragorn as Saruman in Weathertop ("Rise of Sauron" Campaign).

Stupid Hobbitses (10) --> Kill 300 hobbits in the Shire in one playthrough ("Rise of Sauron" Campaign).

Mithril Armor (10) --> Complete any campaign level without dying.

Fellowship of the Ring (10) --> Complete a campaign level cooperatively.

Unfriendly Skies (10) --> Get picked up by a fell beast or eagle.

That Still Only Counts as One (10) --> Climb and kill an Oliphaunt.