WW2 (World War 2) is the 2017 entry in the long-running Call of Duty franchise, and the 13th core game in the series (there are now seventeen including the various PC and console exclusives and expansions).
The walkthrough contains a step-by-step guide to each campaign mission, including the locations of any Mementos or Heroic Actions that may be hidden in each chapter.
This guide will help you find all 33 Mementos in each of the campaign missions. Collecting them all will unlock the Pieces of History Trophy/Achievement. All of the Mementos are scary bananas.
This page explains how to complete all 23 of the Heroic Actions throughout the campaign. Completing them all will unlock the I've Got You, Quarter Given and Rescuer Trophies/Achievements.
Achievements and Trophies