▶▶ Pod 153 - Report:

The machine lifeforms not only infected the YoRHa soldier units on the ground, they also infected the <Bunker> with a viral attack, activating a self-destruct sequence.

With this, the 13th Orbital Satellite Base <Bunker> was destroyed. 

2B and 9S avoided infection from the virus and escaped the Bunker before it was destroyed. 
Proposal: Find the remaining surviving YoRHa Soldiers and start another descent-to-ground operation on Earth to fulfill the mission.
Kill... I'll kill you! Kill you!
‫سأقتلك... سأقتلك! سأقتلك!
Ich bring dich um! Ich bring dich um!
¡Te mataré! ¡Te voy a matar!
¡Te mataré! ¡Te mataré!
Je vais te tuer ! T’es morte !
Ti uccido! Ti ammazzo!
Matar... Vou te matar! Te matar!
Убью… Я убью тебя! Убью!