This "guide" is little more, than a screenshot dump of the 36 collectibles found in The Secret Order 3: Ancient Times. The screenshots are taken in the order I have found the collectibles, and the cursor is positioned on the collectible. The order in which you encounter the areas might be somewhat different.

Since some areas become unavailable as you progress through the game, collect everything as soon as you can. If you miss one entirely, you have to start a new game to have a chance to collect them all.

Doing so will net you three achievements.

If you find any errors in this guide, please let me know.