Here is the full list of all 46 The Lord of the Rings: War in the North achievements worth 1,000 gamerscore.
Complete a playthrough on Legendary difficulty.
Equip all parts of an armor set.
Complete a playthrough on Heroic difficulty.
Create 15 potions in a single playthrough.
Kill 4 enemies simultaneously.
For one character unlock every skill that provides a modification to War Cry, Sanctuary or Evasion.
Summon Beleram 10 times in a single playthrough.
Unlock every active-cast ability in one character’s skill tree.
Defeat Agandaûr without the aid of Beleram.
Complete a playthrough on at least Normal difficulty.
Defeat Sauron's Lieutenant Agandaûr.
Complete the investigation of the Cult of the Lidless Eye.
Amass 25,000 coins.
Help weather the siege of Nordinbad.
Kill 50 enemies with headshots in a single playthrough.
Meet a dragon and survive.
Discover 25 secrets in a single playthrough.
Achieve level 20.
Slay Saenathra.
While in Hero Mode, perform a streak of 50 hits.
Free the elf from his captors in Mirkwood Marsh.
Defeat the Sorceror Wulfrun.
Complete 15 quests in a single playthrough.
Help destroy the citadel within Mount Gundabad.
Kill 150 enemies with war machines in a single playthrough.
Deal 3000 damage with a single ranged strike.
Slay the wild snow trolls.
Slay Bargrisar the stone giant.
Achieve at least 1 rank in a tier 3 skill.
Speak with Frodo in Rivendell.
Slot an elfstone into an item.
Learn of the Ring of Power and the plan for its destruction.
Defeat the Barrow Wight Lord.
Discover what happened to the missing Rangers.
Kill 600 enemies in a single playthrough.
Defeat Agandaûr's lieutenant Tharzog.
Achieve level 10.
Revive a fallen ally.
Locate 5 gilded treasure chests in a single playthrough.
Deal 1500 damage in a single melee strike.
Kill 200 enemies in a single playthrough.
Join forces with the sons of Elrond.
Help free the Great Eagle Beleram.
Perform 3 critical hits within 10 seconds.
Slay one enemy together with 2 other players.
Absorb 25,000 total damage during the course of 1 level.