In Resistance - Retribution (M6), Grayson wears a Specter uniform and has glowing Chimeran eyes. He can regenerate health, gets access to new weapons and breathes underwater. He is also able to reach hidden passages and pick up intel, unlocking plasma grenades and even a further expanded story. This game mode ends when the game is quit and progress cannot be saved.
K B k C 2 c p B R g D d x C y Q T s u n P f t h v C E v K l M s y t D W w D v 5 f Y h K e o 4 q Y b C
Most of the link reports are working. Please watch the video tutorial before reporting