Tales of Xillia
46 Achievements
80-100h
Sub-event Superhero
Complete a target number of sub-events. Awarded to Xillia's most curious questers.
7.7%
How to unlock the Sub-event Superhero achievement in Tales of Xillia - Definitive Guide
Progress on this trophy does NOT carry over to a NG+.
For this trophy you’ll need to complete 90 sub events in a single playthrough. You’ll usually know you can start a sub event when you see a ! over an NPC’s head and sometimes entering specific places at specific times will also trigger one. You will also be prompted with a sub event skit when one is accessible in an old town via fast travel.
Since over 30 sub events can be missed, 9 of which can be missed in Jude's playthrough and 7 in Milla's before you miss your chance at the trophy, it’s advised to use the missable section of the sub event guide as you play, making sure to finish the missable events before they become unavailable. When you reach the point before the final boss, you’ll be free to do all the other events at your leisure.
Please refer to the Sub Events Guide for more information.
Here's a good guide:
https://www.ps3trophies.org/forum/tales-xillia/207180-sub-events-everything-you-need-know.html
Only if you are playing as Milla, then the side quest “The History of Auj Oule, complete” in Chapter 3 must be done after the whole party has gathered in the castle and is ready to go to Gaius. The quest cannot be completed before Jude returns to the party. After you speak to Gaius, the quest will fail.