This guide will show you how to get all endings in Ad Infinitum. As of writing, the game features a total of three endings, and unlocking each one of them also unlocks the corresponding achievement. So, if you’re planning to get all Ad Infinitum achievements, then this guide will help you.
Ending 1
This ending will unlock the achievement called “Peace” in the game.
To get this ending, you need to choose the positive options during the final battles at the end of each chapter.
Chapter 1
To achieve this ending in Chapter 1, make sure to utilize the three green light music players during the Despair battle. Then, press the button and interact with the monster to save her.
Chapter 2
In Chapter 2, lower the gas pressure by adjusting the valves in the four corners until all four lights on the middle control panel turn green. Afterward, pull the switch and interact with Corruption to save him.
Chapter 3
For Chapter 3, lower the three cages by pulling down the levers. Remain in the middle area until the battle concludes after successfully reacting to the creature’s attacks four times in a row. Finally, interact with Pain to save him.
Outcome
By following these steps, you’ll unlock an ending where you reunite with your family and find peace. During the climactic battle, you’ll confront the truth of abandoning your brother in the barbed wire and falsely informing your family of his demise. Ultimately, your family will come to understand that the individual who returned is not a monster but your injured brother, leading to reconciliation.
Ending 2
Getting the Ending 2 will unlock the in-game achievement called “Ad Infinitum”. This is considered the bad ending of the game.
To achieve this ending, you must opt for the malevolent path during each of the three boss fights at the conclusion of every chapter.
Chapter 1
To unlock this ending in Chapter 1, utilize the three red light music players during the battle against Despair. Then, press the button and interact with the monster to kill her. Alternatively, you can defeat her and allow her to be sucked into the void without finishing her off, resulting in a different achievement. Despite the choice, the outcome of the game remains unchanged.
Chapter 2
In Chapter 2, raise the gas pressure by adjusting the valves in the four corners until all four lights on the middle control panel turn red. Afterward, pull the switch. When confronting Corruption, choose to either kill him immediately or wait for him to perish on his own, unlocking a different achievement.
Chapter 3
For Chapter 3, raise the three cages by pulling up the levers. Remain in the middle area until the battle concludes after successfully reacting to the creature’s attacks four times in a row. When faced with Pain, opt to kill him or wait for him to die on his own for another achievement.
Outcome
By following these malevolent actions, you’ll reach an ending where you discover the deceased bodies of all three members of your family, with the implication that you’ve been responsible for their demise. The officer will reward you and send you back to the battlefield, seemingly trapped in an endless cycle.
Ending 3
This is considered the worst ending in the game, and getting this will unlock the “Lost” achievement.
To achieve this ending, you need to mix your choices by saving some bosses and killing others. Your specific walkthrough of saving the first two bosses and killing the third one should work, but other combinations of saving and killing bosses should also lead to the same outcome.
Outcome
In this ending, the outcome varies based on your choices in the boss fights. Some of your family members’ bodies will be found dead, while others will be redeemed depending on how you decided to conclude the battles. However, despite the mixed results, the officer will ultimately appear and execute you, declaring that there is no such thing as a half victory. As a result, you’ll find yourself confined to an asylum, tormented by the monsters representing your family members.
That's everything we are sharing today for this Ad Infinitum guide. This guide was originally created and written by Razimigo. In case we fail to update this guide, you can find the latest update by following this link.