Tranzit
Tower of Babble
The main quest for Tranzit is Tower of Babble. There are two ways of completing this quest, one way is by listening to Dr. Ludvig Maxis, this can only be done while the power of the map is turned off. The other way is by listening to Richtofen while the power of the map is turned on.
The Maxis Side of this quest is the official canon ending of Tower of Babble for the Call of Duty: Zombies timeline.
Requirements
The Maxis Side of this quest requires at least two players and can only be done while the power is off. The Richtofen Side of this quest can be done with any number of players, but, if you are solo you must be playing as Samuel Stuhlinger as he is the only one of the Victus crew that can hear Richtofen, power must also be on to complete this side of the quest.
You will also need to find the following items to complete either side fully:
EMP Grenades (both sides, found in the mystery box)
Power Switch Built (Both Sides, parts found within the Power Station)
Two Turbines (Maxis Side, parts found within the Bus Depot)
Jet gun (Richtofen Side, parts found within the Hunter's Cabin, Nacht der Untoten building, Tunnel between Bus Depot and Diner, and near Tombstone Soda)
Any Explosive (Richtofen Side, Ray Gun/Ray Gun MKII are ideal)
Maxis Side
Free Avogadro
Head to the Power Station and turn on the power, once Dr. Ludvig Maxis requests for the power to be turned off or the Avogadro escapes the Power Station then you can turn the power back off.
Charging the Pylon
Head to the back of the cornfields between the Farm and the Power Station area to find a Pylon. While near the Pylon, wait for lightning to appear directly above a player, then end the round to have a chance for the Avogadro to spawn.
If he spawns, two players with turbines must place them underneath the Pylon. You'll hear a quote from Dr. Ludvig Maxis, wait for this quote to finish then when the Avogadro is directly underneath the Pylon you must throw an EMP grenade near him (be careful not to hit the turbines with the EMP as this will turn them off) killing the Avogadro and fully charging the Pylon.
Both turbines must have enough power to complete this step. If a turbine runs out of power during the step, you'll hear a quote from maxis saying your power supplies are being drained. If you hear this quote, replace the turbine with a fresh one.
Final Step (Maxis Side)
Finally, while the two turbines from the previous step are still underneath the Pylon, two other players must place two turbines down at any two street lamp locations on the map (one turbine at each lamp). If done successfully, you'll see a glowing orange orb form from the lamps and fly towards the Pylon.
Congratulations! You've completed the Maxis side of the Tranzit main quest: Tower of Babble.
If you are in a two player game, you do not need to have any turbines placed underneath the Pylon for this step.
Richtofen Side
Heating up the Pylon
Using the Jet Gun fully charged, you must head beneath the Pylon in the cornfields between the Farm and the Power Station, and shoot the Jet Gun (heating up the Pylon) until it breaks. If done successfully, Richtofen will begin speaking to Samuel Stuhlinger and the green lamps around the map will start flickering.
Make sure the Jet Gun is fully charged before doing this step. You can make sure it's fully charged by pulling it out and not firing it for about 40-60 seconds. If you fail to have it fully charged before doing this step you will need to re-build the Jet Gun again and repeat this step.
Explosive Kills
While underneath the Pylon, you need to now get 25 Zombie Kills with explosives (Ray Gun/Ray Gun MKII are ideal). If done successfully, the player who is Samuel Stuhlinger will hear Richtofen speak to him about the power being too much.
If you are in a group, the 25 explosive kills are collective and do not need to be by a single player. If you are doing this solo, make sure you are playing as Samuel Stuhlinger otherwise, you will not be able to know if you have completed this step.
Final Step (Richtofen Side)
Finally, four EMP grenades must be thrown at four different green lamp posts. These lamp posts can be found all over the map, if you are playing with four players, have a player at each lamp post throw an EMP grenade disabling them. If done successfully, Richtofen will congratulate Samuel Stuhlinger.
If you have two or three players, for one player to be able to throw a EMP at two lamp posts before the duration of the EMP wears off, you need to have a Denizen make a teleporter under the lamp post by walking up to the lamp with a Denizen on them, then throwing one EMP at their current lamp and jumping into the teleporter then throwing the second EMP. If done successfully, Richtofen will congratulate Samuel Stuhlinger.
Congratulations! You've completed the Richtofen side of the Tranzit main quest: Tower of Babble.
To complete this step completely solo is extremely complicated and not recommended at all as it requires both skill and luck to achieve. However, if you want to attempt to complete this step solo please refer to the Video Guides section as it is easier to explain with a visual representation.
Video Guides
Maxis and Richtofen Side (including solo) by CodeNamePizza
Credits
Some images used were sourced from the following community members:
Moon
"I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the Earth." (JKF, 1961)
Die Rise
Watch your step! Fight for survival atop the towers of doom, where dizzying heights and relentless undead make a deadly combination