Full list of all 16 The One We Found achievements worth 1,000 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Xbox One.
You have destroyed the horde.
You have perished 20 Times.
You have discovered the secret.
You have Completed Level 10.
You have Completed Level 9.
You have Completed Level 8.
You have Completed Level 7.
You have Completed Level 6.
You have Completed Level 5.
You have Completed Level 4.
You have Completed Level 3.
You killed a Past Patient
You have Completed Level 2.
You have Completed Level 1.
You have destroyed a melon.
He didnt deserve it.