There are a total of 100 achievements to unlock in Triangle Strategy, covering a bunch of activities related to battle and learning about your many companions. Here is our Spoiler Free guide to help you unlock the Unanimous in Triangle Strategy.
Unanimous
In Triangle Strategy, there is an important gameplay mechanic called the Scales of Conviction. It decides several turning points within the game through a form of democracy between your main companions.
You have a chance to persuade them to your cause, tipping the Scales of Conviction to your preferred side. Some persuasion will be harder than others, to near impossible, as companions also have their own convictions and priorities.
In Unanimous it asks you to make it so that everyone chooses the same side. I recommend achieving this in Chapter VIII, Part I: The Weather Vane. The reason for this is that everyone is willing to listen to reason.
Here are the steps you need to make to ensure that you get the unanimous vote in Chapter 8, Part 1.
Once you can control of Seranoa, head outside to the town to get necessary information to use to your advantage in order to persuade your companions
•Speak to the soldier just past the castle entrance to learn of information to help with persuading your companions.

•Speak to the soldier on the right most side of the castle walls

•In the house near the last soldier, speak to the man inside

Head back and speak to your companions focusing on persuading the ones on the green side to the red side. This means we'll be speaking to Erador, Anna, Roland, and Benedict. Since this is a spoiler-free guide, I will only be listing the choices I recommend you choose in order to succeed.
Roland
• 3rd
Anna
• 1st
Erador
• 1st
• 2nd
Benedict
• 3rd
• 2nd
With these four companions convinced towards one choice, this will allow you to have a unanimous vote towards red.

That was our Unanimous Achievement guide for Triangle Strategy! We hope you found it helpful, and there are more Triangle Strategy guides for you to check out soon as well as our review for the Xbox and PlayStation version of the game!