To perform this glitch just go to a store and purchase an item. Then go to the 'Sell' option and hold RT and keep selling the item. If you do not release RT you will keep aquiring coins until you do release it at which point the item is sold.
Unlockable Challenge Maps
To unlock additional Challenge Maps for The Lord of the Rings - War in the North, simply follow the instructions below -
Lothlorien Challenge Map - Finish Chapter One.
Osgiliath Challenge Map - Finish Chapter One.
To unlock two additional difficulty levels, follow the instructions below -
Heroic Difficulty - Complete the game on the Normal difficulty.
Legendary Difficulty - Complete the game on the Heroic difficulty.
Go to any store and find what ever item you want to sell. Hold RT to move/pick up the item but keep it held up and select sell as many times as you want and you will continue to aquire money. This can be used to get an insane amount of money at the very start of the game. NOTE: Once to place the item back down, it will be gone, since you sold it, so only use this on stuff you want to sell or get rid of.
Against All Odds (80) - Complete a playthrough on Legendary difficulty.
Hero of the North (80) - Defeat Sauron's Lieutenant Aganda'r.
Hero of Legend (50) - Complete a playthrough on Heroic difficulty.
Siege-breaker (35) - Help weather the siege of Nordinbad.
Spider-slayer (25) - Slay Saenathra.
Strength of Our Alliance (25) - Slay one enemy together with 2 other players.
Bane of Mordor (25) - Kill 600 enemies in a single playthrough.
Expert Treasure-hunter. (25) - Locate 5 gilded treasure chests in a single playthrough.
Mountain-breaker (25) - Help destroy the citadel within Mount Gundabad.
The Lidless Eye (25) - Complete the investigation of the Cult of the Lidless Eye.
Victorious in Battle (25) - Complete a playthrough on at least Normal difficulty.
Warrior Exemplar (25) - For one character unlock every skill that provides a modification to War Cry, Sanctuary or Evasion.
Well-arrayed (25) - Equip a complete magical armor set.
War-machinist (20) - Kill 150 enemies with war machines in a single playthrough.
Now for wrath, now for ruin! (20) - Kill 4 enemies simultaneously.
Relentless (20) - While in Hero Mode, perform a streak of 50 hits.
Seeker (20) - Discover 25 secrets in a single playthrough.
In the Dragon's Den (20) - Meet a dragon and survive.
Keen-eyed Marksman (20) - Kill 50 enemies with headshots in a single playthrough.
Like a Thunderbolt (20) - Deal 3000 damage with a single ranged strike.
Living Shield (20) - Absorb 25,000 total damage during the course of 1 level.
Many deeds, great and small (20) - Complete 15 quests in a single playthrough.
Fell-handed (20) - Deal 1500 damage in a single melee strike.
Battle-master (20) - Unlock every active-cast ability in one character's skill tree.
Begone, lord of carrion! (20) - Defeat the Barrow Wight Lord.
Champion of the North (20) - Achieve level 20.
Dragon-hoard (20) - Amass 25,000 coins.
Eagle Savior (20) - Defeat Agandar without the aid of Beleram.
Friend to the Eagles (20) - Help free the Great Eagle Beleram.
Giant-slayer (20) - Slay Bargrisar the stone giant.
Swift-winged Warrior (20) - Summon Beleram 10 times in a single playthrough.
Tharzog's Bane (20) - Defeat Agandar's lieutenant Tharzog.
Wulfrun's Bane (20) - Defeat the Sorceror Wulfrun.
Friend to the Ring-bearer (10) - Speak with Frodo in Rivendell.
Gem-studded (10) - Slot an elfstone into an item.
Elf-friend (10) - Join forces with the sons of Elrond.
Defender of the North (10) - Achieve level 10.
Foe-hammer (10) - Kill 200 enemies in a single playthrough.
Friend of the Woodland Realm (10) - Free the elf from his captors in Mirkwood Marsh.
Herb-master (10) - Create 15 potions in a single playthrough.
Sudden Fury (10) - Perform 3 critical hits within 10 seconds.
Tracker (10) - Discover what happened to the missing Rangers.
Troll's Bane (10) - Slay the wild snow trolls.
Trusted with the Secret (10) - Learn of the Ring of Power and the plan for its destruction.
War-hardened (10) - Achieve at least 1 rank in a tier 3 skill.
Where there's life, there's hope (10) - Revive a fallen ally.