Hey guys what is going on? In this video, Rigo from TheNewbs explains the new Season 4 event in Call of Duty Modern Warfare III known as Critical Countdown!
You can take part in this event across all facets of MWIII (Multiplayer, Warzone and Zombies) but the most efficient way to grind the event is via zombies.
it involves adding tracked challenges and collecting different colour types of DNA. This will grant you smaller rewards on the way to collecting the World Ender blueprint once you complete the event!