to unlock frodo easy: if you are in a mission press ''esc'''to pause te game then press and hold left ''shift'' left ''ctrl'' and left ''alt'' and when you stil holding it typ 6555 on the right side of your keybord, a sound affect should be heard if done propely and frodo is in the character menu in every mission.

but you must do this cheat every time you start the game lord f the rings the return of the king if you do not frodo is ''locket'' and another thing with frodo you can play a mission the same mission over and over so training is easy.