This achievement is story related and can't be missed.
** Unfortunately Dragonsss, pulled down, the guide they posted, so I've updated solution with new videos.
The Part 1 video synchronizes four viewpoints before he starts 1st mission, so you can safely skip all the way to 15:25 minute point in video for 1st mission.
Necessary actions are:
Mission 1: Unconvinced
(1) Health limit lose < 50% (video 19:00)
(2) Use breakable objects 2 x during the bar fight (video 24:50)
A few explanations:
(a) You'll find the Indian Maiden quicker if you stay on her path in snow.
(b) Need to mention the quicktime sequence with wolves (20:19). It always starts with "B" and then a second button (X, Y, or A). They must be hit exactly as they appear. If you hit "B" too late, you'll get >50% damage immediately from wolf. However, thanks to David Do0M for pointing out that there is no penalty for hitting B too early, as a matter of fact, it speeds the process. You can hit B before it even appears of screen and it will merely flash and go straight to your second button press. It is the same with wolves, cougars, bobcats, elk and bears. Timing wise, hit buttions as soon as they apear on screen (just like quick time in Resident Evil & other games, but timing is LESS forgiving). Also, neeker75 adds that you can also simply shoot the wolves before they jump and forget about the QTE
.
(c) Don't run ahead of your NPC when they have the blue (follow) symbol. Doing so will cause you to unsync.
(d) For the bar fight scene, ensure you use combos using "A" to break defense and "X" and "B" to counter followed by "X" to make sure you throw at least two soldiers on breakable objects (most likely table).
Video credit to: Centerstrain01
Mission 2: Execution is Everything
(1) Do not kill any guards (2:48)
(2) Sabotage 2x cannons (6:01)
** NOTE: Calex dEUS suggests entering the fort from the back right gate as you look at the fort. It is much easier, taking out the guards silently / non lethal on the way and any in your path inside the fort.
The Part 2 video starts with getting to where you start 2nd mission, so you can safely skip to 2:17 minute point in video for 2nd mission. Also,Mission 2 ends at 9:30 and the next Mission doesn't start until Part 3 video so you can skip everything in Part 2 after 9:00 minutes.
Video credit to: Centerstrain01
Mission 3: The Braddock Expedition
(1) Kill two Militia without triggering open conflict (3:00)
(2) Destroy three powder carts (6:24) [You're on a horse, Starts with -- Press
prompt for necessary action of highlighted area]. Mission action is over at 7:00-achievement pops at 15:58 after linear story line and cut scenes.
SPOILER ALERT - MAJOR PLOT TWIST AT END OF VIDEO - Watch to end at your own peril!
(video credit to Centerstrain01)