There are many simple trophies in AC Shadows and The Ronin trophy technically falls in that camp, being just a Bronze Trophy. However, it does require a little work to set-up time and for you to have advanced the story a bit.
See, we need a few things before we can get started. Below, we'll go over those things and get you your trophy and also lay out the important steps to make sure Ibuki can be unlocked as an ally or romantic parter later.
The Ronin Trophy - Ambush Interrupted
To unlock The Ronin trophy you need to:
1. Unlock and play as Yasuke - fairly simple but very much required. This quest is part of Yasuke's wider story, with Ibuki being one of his unlockable allies. The quest doesn't require any other things to unlock it; you just have to travel to the location to make the "event" happen.
2. The Ambush Interrupted quest location is outside Kashiwara Village, in the western part of Iga, near the Hijiyama Fort in the Todaiji province.
3. During the quest, you must then speak to Ibuki, who you will find in a field having a disagreement with some locals.
4. Start speaking with Ibuki, and during the dialogue, make sure to select the "I have changed" option as shown below.
5. Continue the quest as normal, fighting the wave of enemies that approach.
Pro tip: If there is a local patrol walking in the area, wait until starting the quest, as they will also engage you
6. Once complete, speak to Ibuki again to continue the next part of the quest. During this section, you will get another major dialogue option.
Note: This second option will not impact The Ronin trophy. However, if you wish to recruit Ibuki as an ally or romance option, you must pick the correct option.
7. Now, when Ibuki asks what you would do in the same situation, select the "I would forgive him" option in the dialogue.
The rest of the quest will play out with Ibuki telling us they will meet us later if we want to continue the quest. By continuing the quest, we can unlock Ibuku as an ally.
The Ronin trophy is now complete, and you should receive a notification of its completion.
FAQ
Unlock Ibuki as an ally
Once the above is completed, Ibuki will leave, bidding Yasuke a fond farewell. Ibuki will say that the pair should meet up in the future, which will allow you to recruit Ibuki as an ally for Yasuke. This gets started in Hijiyama. You can read our full guide on how to recruit or romance Ibuki.
Can Naoe complete Ambush Interrupted?
No, this is one of Yasuke's side quests/trophies. An example of the opposite comes in the form of Oni-yuri, while Yasuke can recruit her as well, she will only join you if you select the Naoe options during her quest.
