Office of Not Dying

One of today's daily challenges is to complete ONI on Legendary without dying.  It's worth 4,000 cR and rightfully so, because it's basically impossible to do on your own.  There is a glitch in the game however, where it will credit you for finishing a level without dying if you don't do from the last "Save and Quit" checkpoint.  What this means is that you can play through the entire level on Legendary solo, die as many times as you like, and then Save and Quit at the last checkpoint.  Then Resume your campaign game, don't die, and BAM 4,000 cR.  On ONI Sword Base, the last checkpoint is at the top of the base after you cross the last bridge and before you pick up the Rocket Launcher to go Banshee hunting.