Difficulty won't affect ribbon XP.
I don't have the Friendly Fire Mutator but could an Ink/Incendiary Grenade suicide work? It only costs 1500 to buy back in so you can afford it. Only other method of death I can think of are the Kryll in Bullet Marsh, but idk if the sandbags by the Longshot are sufficient for holding the weapon in place.
I should be able to test this in a while if nobody else gets around to it (can't get to second controller atm), but I figured I'd bring it up in case somebody can try it sooner and/or they also need a workaround to the Mutator.
Last edited by Veedrock; 01-30-2012 at 03:33 PM.