Hidden Treasures

Introduction
There is a Hidden Treasure in almost every one of the first maps of the main story's chapters as well as every numbered Time Rift. You can claim each Treasure by having a unit under your control end their turn on the tile which contains the Treasure. Every map containing a Hidden Treasure is repeatable so it is not strictly necessary to collect each one during one's first clear of a map. Maps which contain a Hidden Treasure will show whether it has been collected or not. You must successfully clear the map in order to keep any Treasure collected. It is advisable to read each map's victory conditions so that you'll know if you can get the Hidden Treasure while completing the map. Certain advice is noted in italics in the description column for the reader's benefit.

N.B. Any skill that refreshes a unit's turn (such as Strike, Chivalry, Wind Spiral, etc.) counts as having taken a turn so will claim the Treasure if used on the correct tile, allowing you to continue playing without having to sacrifice a unit's turn.

N.B. It may be advisable to take a unit with teleport (Hein, Jessica) or one with the ability to summon a unit (e.g. Lana, Bozel - requires 1 runestone) in order to make collection of the treasures much easier without compromising the main objective of each map. A unit that is teleported onto a Treasure tile will collect the Treasure so is free to take their turn thereafter.

Main Story Hidden Treasures
Hidden Treasures of Part I of the Main Story.

Time Rift Hidden Treasures
Table made based upon info compiled into top spreadsheet. All credit to original creator. You can click each image for a larger higher resolution version.