On this page of our guide to AC Valhalla we have prepared important information about the story decisions you will have to make during the gameplay. You can find out, among other things, whether making a choice is time-limited and what consequences your decisions may have.
You can easily recognize an important moment in which you have to make a decision, because instead of choosing a specific dialogue option, you will get notifications that indicate what you can do at a particular moment or point of the story (for example, make a decision to spare someone's life). The game doesn't impose a time limit, so you can peacefully think it over and make a definitive decision.
The choices you make have an impact on the course of the game. However, the consequences are not always immediately apparent. It may happen, for example, that a character you have spared will once again stand in your way later in the game.