sorry there's a cheat for that but I own a gameshark for ps2 it has these cheats for
resident evil 4:unlimited ammo unlimited health for ashly and leon and never get scwished
by a bolder you can buy a a PS2 gameshark at Gamestop. Hope I helped

first restart the game, i know that will be hard but this time you will do the right way,
first when you go kill the first ganado, please i mean PLEASE don't waste bullets knife
him if you don't know you must go near him and he is about to atack you go back when he
finishes the attack you will have 2.74 seconds exactly to knife his face and then kick him
and if he isnt dead dont be a retarded and shoot him while he's on the ground knife
him.And repeat the process the many times you are able to.i hope it helped.