Originally Posted by spartancell
so wait, all i have to do is beat the last level on hard? and basically what you are saying is that i can put my profile on hard, and have a dummy profile (profile 1)on easy, and it if i join in later, then finish the level i get the hard achievement??
Start the level with your real profile, and play until your last credit. Don't use that credit. Now jump in with the dummy profile which will have the credit amount of easy. The boss will still be set to hard, but you'll have lots of lives to do it with. Jump back in with your real profile when the boss is about to die.