Accepting the help will make this section trivial.
Note: Dying repeatedly in the minigame will eventually prompt the player asking them if they want help( This only happens if you are connected to PSN network, in offline mode you will receive no help and it will be incredibly hard to finish the minigame.). Accepting the option stating you "wish for them to survive" will allow you to play a shooting minigame. Complete the minigame to unlock this ending.
If accepted, after a brief exchange between both pods, you will be prompted once more. 17-09), during the credits, you will be prompted by Pod 153 to perform a data check.
Endings Guide in Nier: Automata is covered on this page.