Kingdom Under Fire: Heroes Cheats

After the credits roll when you beat a campaign, it will give you the option of making a new save. If you do, it will allow you to replay any stage in that campaign with your previous stats. Enemies aren't more powerful, but you can continue leveling up your characters after each mission. You can also have characters play other peoples missions. So if you completed both Walter's and Ellen' campaigns, you could have Ellen do any of Walter's missions and vice versa. The completed campaign saves need to be independant of each other for this to work.