To do this have theater mode enabled. br 1. Go into the speed infection lobby br 2. Go into the multiplayer main menu br 3. Go into Vault then theater find the video of the infection. br 4. After watchingending it you have it!br To do this have theater mode enabled. br 1. Go into the speed infection lobby br 2. Go into the multiplayer main menu br 3. Go into Vault then theater find the video of the infection. br 4.