Hey everyone, just a quick video showing where to get the expanded backpack. This is kinda early in the game, about 2 hours into it, and is right after a part of a story mission. You have to find the book De Remedi Secrati for reasons, and right after you pick it up you'll unlock a secret passage back. When you enter it, go right to find the backpack and a zombi. If you go left, you'll find the crossbow, so if you find the crossbow, just turn around;) Hope the video helps!