I recently played the Undying Mind as a level 20 Titan with White Common armour. No perks, no enhanced cool downs, no strength, no discipline and no strength. Used a blue rare Suros JJJ, a blue rare Feral Spark and a green Rocket Launcher. It was rough as I had to pick my times very carefully when using my grenade and super. I am about to go through Omnigul doing roughly the same thing.