Part of solving all the puzzles that will let you move further into the game requires that you explore the entire area available to you. Some levels have wall mounts you can grab onto, then jump to other locations with new puzzles you'll need to solve.
As you progress through the game you'll unlock all the "The Lord of the Rings" characters you love, along with different versions (depending on the point in the trilogy) of some characters. Notice that there are 15 in this screenshot, but the scrolls at the bottom indicate that there are six pages of characters.
