Sniper Elite 3

There are total of 20 Collectible Cards in the Game. I have here a full Collectibles & optional Objectives Guide Online. There is only one! Video for all.

I will link / post here the 20 Collectible Cards. All Collectible Cards are immediately saved, so you can quit out the Mission once you have collected what you want
Siege of Tobruk

Gaberoun

Halfaya Pass

Fort Rifugio

Siwa Oasis

Kassarine Pass

Pont Du Fahs Airfield

Ratte Factory

Video again (so you can use Timelinks without scrolling)

There are a total of 20 Collectible Cards in the game. You can see how many there are on a mission in the start and campaign menu. You only need to run into to cards to collect them, you can replay any mission to collect missed cards and you can quit the mission as soon as you collect them.

A guide to ALL 110 collectibles can be found HERE

A Playlist to all of the collectible videos can be found HERE

Locations of the Collectible Cards other collectibles with a Timeline are in the videos below.

Mission 1 - Siege of Tobruk


Mission 2 Gabroun


Mission 3 - Halfaya Pass


Mission 4 - Fort Rifugio


Mission 5 - Siwa Oasis


Mission 6 - Kasserine Pass


Mission 7 - Point Du Fahs Airfield


Mission 8 - Ratte Factory

A COMPLETE guide of all 110 collectibles & 15 Weapon Upgrades in Sniper Elite 3 can be found HERE.

The collectibles, including War Diaries, Collectible Cards, Sniper Nests, Long Shots & Weapon Upgrades are found within the 8 story related missions of the game. Upon picking up the last collectible of each variety, you will be rewarded the achievement(s).

You can check your progress using the menu at any point (except weapon upgrades) during the game as well, and picking one up will save it immediately. Feel free to replay missions to pick up anything you've missed.

Alternatively, please see this video which is the beginning to the collectibles guide video playlist: