The Assassin’s Creed franchise really tried to go hard- core RPG with the inclusion of impactful choices in the game, where a player’s choice of dialogue or action will affect the game’s narrative in a significant, or at least a notable way. Although, this has been their approach since the start of the pre-historic party with Assassin’s Creed Origins, they have always had that essence of choices in earlier titles like Assassin’s Creed Syndicate, but in a much narrower way which only supported multi-linear gameplay i.e. reaching the same ending with multiple paths available to reach there.
This game has been filled with quite a few of such choices of dialogues and actions which affect the final outcome of the game, that being how many family members of Kassandra/Alexios survive. Out of the nine possible endings, each can be achieved with a varied combination of choices one makes. But, do note there are many pseudo choices which do not really make a difference to the gameplay narrative and are just there to give the player an illusion of control and the satisfaction of choosing their own way of interaction.
There are also other more subtle choices in the game, which the player makes in the way he approaches the gameplay, from choosing the approach to a mission or which quest to go in first.
So, here are the list of choices the player gets to make which will really impact the flow of the gameplay narrative, and lead to a different outcome if chosen otherwise.
Here is the list to getting the most likable ending:
The Blood Fever
This side quest in the starting area of Kephalonia actually affects the narrative in a big way.
If you let the infected villagers escape, the sickness will spread across Greece. If you miss the quest by not doing it before you leave the island, or if you choose to not free the infected, the sickness will not spread.
The Wolf of Sparta
Killing Nikolaos will prevent him from reuniting with you later, and ultimately affects the ending also, it will prompt a fight with Stentor, though defeating him here won’t actually kill him.
You have two choices to choose from to deal with Korinth’s ‘The Monger.’
Execute ‘The Monger’ publicly to please Anthousa or take him to be dealt with secretly, to please Brasida.
If you publicly execute The Monger, in a quest later, ‘To Kill or Not to Kill’, you will have no choice but to kill Lagos the Archon, a cultist who is friends with Brasida.
If you chose to secretly execute the Monger in Monger Down, you will be able to spare him and gain evidence that will condemn a king in the future quest A Bloody Feast. This outcome regains your citizenship to Sparta, and makes it easier to assassinate your next target.
So, this one is kind of obvious, isn’t it?
Ashes to Ashes
You must choose to save a baby’s life who is stuck in a burning building or chase the cultist Chrysis.
Not saving the baby will make it impossible to save your family down the line, although you will get Chrysis’ rewards immediately – Legendary Gauntlets of the Immortal from the Immortal Legendary Armor set, and an artifact fragment.
If, on the contrary, you save the baby, you will then have access to a side quest nearby that will allow you to kill Chrysis for good this time. It’s called ‘Death Comes for Us All’ and can be found at the Northwest Battlegrounds of Argos in Argolis.
So, again a test of one’s moral but still pretty straight forward choice.
Paint it Red
In the quest if you previously spared Nikolaos, he will appear again. Be kind to him in your responses to keep him hanging around, this way you can stay on the path to the best ending where everyone can be saved. End the conversation by telling him to go to Stentor if you want the ending where all family members are there.
A Bloody Feast
To get the best ending where all of your family members are around, tell Myrinne “I’ll bring Deimos back.”
This may or may not affect the ending, but to be safe if you want the “happiest” one, say, “Hold on!” after fighting Deimos.
To have the option to spare Deimos in Where it All Began, you must convince Deimos the cult is manipulating you both. Deimos will say “I am not your puppet,” if it worked. Here are the options we know works.
“It was the prophecy.”
“The prophecy said you’d doom Sparta.”
“You have no idea what happened on that mountain.”
“Our mother searched for you.”
There are two paths that work after this point in the conversation:
“She thought you were dead.” then “I was thrown off, too.”
“The cult targeted our family.” then “The cult wants to destroy our family.”
Where it All Began
Upon climbing the mountain, Deimos will eventually reach you. If he says “My sword is my family,” then you are on track to achieving the happy ending. Tell Deimos the cult is using him/her.
Refuse to fight her/him here to finally reach the happy ending.
If you do fight Deimos, he/she will kill your mother and you will be forced to kill her/him.
So, there you have it, a list of all the major decisions one can make to get to the best possible ending and a lot in between in Assassin’s Creed Odyssey.