If you've done the last couple of T3s, the challenges should seem rather routine to you. You spell out a word, you do some pushups, or even travel through time. The next series of challenges however will be very immersive and multi-tiered. Challenges 4 through [unknown] will all be issued at once, and to proceed to the next challenge the previous one must be completed. Expect these challenges to last for the remainder of the pregame, and to awaken your inner secret agent! For now, work hard on challenge 3.