Throughout the Story of Mafia, there are 172 collectibles. Most of these collectibles can be obtained during Free Roam, however, there are certain collectibles which are missable during story chapters.
To unlock this achievement you to have found all of the following:
- 20 Dime Detective (Pulp Magazine- help unlocks Lending Library achievement)
- 20 Black Masks (Pulp Magazine - help unlocks Lending Library achievement)
- 20 Super Science Stories (Pulp Magazine - help unlocks Lending Library achievement)
- 20 Terror Tales (Pulp Magazine - help unlocks Lending Library achievement)
- 10 Gangster Monthly (Picture Book Connoisseur achievement)
- 22 Cigarette Cards (Full Set achievement)
- 5 Post Cards (Car Thief Number 1 achievement)
I suggest using the following guide to help you find all collectibles - https://www.powerpyx.com/mafia-1-remake-definitive-edition-c...
PowerPyx has got some good video guides for the collectibles so full credit goes to them! https://www.youtube.com/playlist?list=PLRr5L69yg_kFO3c8CHSis...