How To Get Infected
Part 1: Join Session, Back out to split-screen, Start Checkerboard Map. Should Kick you with ClanTag set as {Cm}.
Part 2: Join Back and Wait for Host to start Part 2. After Part 2 starts, Press the Start Button and you should be spectating.

We Fly High v4 Infection Time : 4 1/2 minutes
After Infected, Back out and Start a game in Private Match.
Then Follow Instructions below on How to Use the Menu.

How To Use Menu
Walk Back and Press D-PAD UP to Open Menu
D-PAD LEFT and RIGHT to Scroll through Sub-Menus
D-PAD UP and DOWN to scroll through Options under Sub-Menus
Press X to select an Option

How To Use The 400 Teleports
Walk back then press D-PAD UP 2 times
Keep pressing D-PAD UP or DOWN until you find map that your on.
Then press D-PAD LEFT or RIGHT to scroll through the Teleport you want.
Press LB or RB to Teleport
To Exit Teleport Menu: Walk Back then Press D-pad Up 1 time. Then Press D-Pad Left or Right for Sub-Menus.
*****All Teleports work online even if your not Host.*****

How To Set Your Prestige
Open Menu, then go to Prestige Menu. Select Prestige you want and press X. It will kick you out, then go back to private match. DO NOT START IN PRIVATE MATCH!!! Back out and start game in splitscreen. After it kicks you, go straight to multiplayer and get 2 kills. Backout and you have your Prestige you selected and everything unlocked.