I See You50
Hunt 30 animals while using Hunter Sense (in Story Mode).
Easily done just make sure you use Hunter Sense when killing an animal. To do this even easier just one shot snakes with your pistol while using Hunter Sense.
Hair Away From Death50
Narrowly escape death 20 times.
You will rather get this on your own from doing a not so good job in the campaign or if your a boss and haven't gotten it yet here's a helpful video to unlock it rather quickly.
Collect all Journal Pages (in Story Mode).
See Collector's Edition Guide for details.