Lord Of The Rings, The: The Return Of The King Cheats for Game Boy Advance

Deagols Skull

With Frodo on the level, Slopes of Mount Doom, Go northeast up several stairs and kill the standard bearer at the top. Open the chest. walk back to the begining and go east until you come to Gollum. Open the chest to find the artifact, Deagols Skull.
Bonus Map: Weathertop

After finding all eight artifacts, the bonus map, Weathertop will be unlocked.
Amon Sul Tip

On the bonus map Weathertop, when the wraiths are following you, lead them through the fire in the middle of the level. Walk close to it and turn so that they go through it, then make a big arc and do it again. This is a way to kill them without having to risk them hitting you.
Bonus Map: Helms Deep

Finish the game once with any character to unlock the bonus map, Helms Deep.
Bonus Map: Moria

Kill 2,000 enemies with one character to unlock the bonus map, Moria.
Galadriels Lock

In the level, Ithilien North, near the end of the level you will find a tree surrounded by butterflies. Disturb them and follow them northeast to a tree. The artifact Galadriels Lock will be next to the tree.
Simbelmyne

With Eowyn on the level, River Crossing, cross the river. The camera shows a horde of orcs. The artifact, Simbelmyne, will be below a pond in the valley where the orcs are.
Last Level Boss

With Legolas, Gimli, and Aragorn, at the last level when fighting the servant of Sauron at the Black Gate, close the lever on one side, but not the other. The first one you close will stay shut, but the second will burst open along with the first. Then fight out one side and run in and kill the gaurds, then the boss.
Morgul Rune

In the level after you save Frodo with Sam, walk up the stairs and left. Walk all the way to the end and then down and back right as far out as possible. On a platform will sit a rune.
Follow the Rats

In the level, Dark Paths, in the Paths of the Dead, near the begining of the level, you will see a group of rats running together, follow them. They will take you through the shortest path through the level.
Hidden Cave

In the level, Hidden Path in the White Mountains with Gandalf, walk around the level killing things. When you reach the uppermost path where your pointer points straight right, go left, break open the barrels, and walk around the ledge. Then backtrack back to near where you started the level. On the path going across above where you started above a waterfall there will now be a cave. Go in and you will be in a secret spot with a Ranger Hollow and a troll, along with drummers, crebain, and barrels.
Bonus Map: Fangorn Forest

After you have played all the way through the game with all six regular characters you will unlock the bonus map, Fangorn Forest.
Fangorn Portal

In the bonus map, Fangorn Forest, the first level contains a portal. Go north-east almost up to the end of the level where your pointer will register red. Turn left and walk up to a space in the grass with a tree stump next to it. Stand next to the space and you will be transpoted back near the begining. You can go back and forth between these two and orcs and goblins will reapear every time, making for easy experience.
Sarumans Palantir

In the upper-most level of the tower of orthanc, where you fight Saruman, go down to where you speak to him, and then go North-East to a flight of stairs at the top of the screen. Go up the stairs and to the left. There will be a chest, open it and the artifact, Sarumans Palantir, will fall out. Do not defeat Saruman until you have done this or you will not be able to go back.
Witch King Help

When you are fighting the Witch King with Eowyn, lead him near a flame. Cross it quickly, and then stop, so that he follows and stops on top of the flame. Keep hitting him without moving and he will go down very quickly and will not be able to recharge before he is dead.
Secret Town

After entering the level, Ithilien North, go up and then right along the path. You will walk under a large waterfall, go up. You will enter a secret level where you can go to a forge, ranger hollow, or aquire a rune from a man standing by a building.
Shelobs Stinger

After Frodo is injured by Shelob you will begin to play with Sam. Defeat Shelob, and you will aquire the artifact: Shelobs Stinger.
Feather of Gwaihir

To aquire the artifact, Feather of Gwaihir, battle Gandalf up to the point where he can use the ability, Summon Gwaihir. Use the ability, and the eagle will swoop, dropping a feather. Gandalf will aquire the artifact, Feather of Gwaihir.
Witch Kings Crown

To aquire the artifact, Witch Kings Crown, beat both the Witch King and his flying mount with Eowyn. After you kill them, walk back to where he began by talking to you. The artifact, Witch Kings Crown, will be laying on the ground.
Hidden Pool

In the level, Anduin River; Campsite, go through the covered bridge and strait to the experience pool. Touch it to get the experience. Then save the game and turn it off. Load the game and go back to the pool, it will now be a health pool.
Level-up Help

If you are having trouble getting a character past a certain point, go into a bonus map with them. You can get lots of experience and purchase items like runes, skill points, or kingsfoil erbs. Bonus maps can be just the boost you need.
There and Back Again

In the level, Corsair Camp, go up and right untill you come to a woman near the top of the screen. She will ask you to bring her brother back to her. Walk down and a little right down steps and cross the river. Walk upwards untill you come to her brother, then walk back to her. She will thank you. Now walk back near where you entered the level, the woman will be standing by a tree. Kill the corsairs around her and go back. She will open the door to the covered bridge and you can go through. Talk to her brother, he will say that he hid his adventure book but cannot remember where. Break open the barrel in the corner down to the right. You will find the artifact There and Back Again.