I have added all my individual guides for the codex entry achievements into one massive guide here. Some important notes which I will add also:
- Field Manuals save after being picked up so you can leave the mission without getting worried you need to get it again. There are
66 of them to collect.
- Once a challenge has been completed you can simply leave to game and it will save.
- The
Bloody April challenge in
Total War seems to be glitched for some people. If it doesn't stay unlocked after completing it simply complete all other challenges and come back to this one to get the
Master of Adaptation achievement/trophy.
- Field Manuals have been given separate videos mission by mission in order to help the trophy/achievement hunter following the guide and make it easier on them.
War Story: The RunnerChapter: Cape HellesThe Big Guns - Call in an offshore barrage.
This is story progress so you won't miss this.
Torpedo Exploit - Get 10 headshot kills.
This is pretty self explanatory, just shoot enemies in the head and after 10 it will unlock.
Battery Beyond - Collect all field manuals.
0:00 - Field Manual 1
0:30 - Field Manual 2
1:10 - Field Manual 3
1:48 - Field Manual 4
2:18 - Field Manual 5
Chapter: The RunnerDrip Gun - Defeat 10 enemies with a sidearm.
From where you start go to the opposite side of the house on your left and you will find a pistol in a chest.
Geology - Defeat 5 enemies with rifle grenades.
There are 2 spawns for the grenade launcher on the map. The first being on the far right of where you spawn near some artillery guns and the second being inside the building you need to go to for your first objective.
Trench Runners Collect all field manuals.
0:00 - Field Manual 1
0:35 - Field Manual 2
1:10 - Field Manual 3
1:53 - Field Manual 4
2:23 - Field Manual 5
Chapter: Be SafeRiver Clyde - Defeat 5 enemies with grenades.
From where you start slowly creep up on the four enemies in front of you. One will walk off to the left while the other will walk to the front two. Throw your grenade right and you will get all 3 but this will make people alert. Now watch down the road and enemies will start bunching up trying to shoot you, I got 4 at once when they bunched up so it's not all that hard. Alternativly you can use this video guide here to make it easier if you still have trouble! Credit to 'Ps4Trophies' for the guide:
Sedd El Bahr - Defeat 10 enemies with melee attacks.
If you put the game mode on easy you can quickly run around the starting area and get these 10 kills in about a minute.
Gallipoli Myths - Collect all field manuals.
0:00 - Field Manual 1
0:38 - Field Manual 2
1:05 - Field Manual 3
1:35 - Field Manual 4
1:57 - Field Manual 5
The Dardanelles - Complete Be Safe.
Simply watch the final cutscene and this will unlock.