Here is the full list of all 20 MRD achievements.
Found artifact #1
Found artifact #2
Found artifact #3
Found artifact #4
Found artifact #5
You found all the watch towers
You discovered what really happened with your father
You spotted a moose
You spotted a deer
You killed a wolf
You killed a bear
You found the hunting rifle
You killed a hare
You have read all the notes
You have successfully hunted the marten
You found the flashlight
You spotted a fox
You spotted a lynx
You found the hunting knife
You successfully held off the attack against the cabin without a single breach