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.
Die 20 Times
You must destroy the horde.
Complete Level 1.
Complete Level 2.
Complete Level 3.
Complete Level 4.
Complete Level 5.
Complete Level 6.
Complete Level 7.
Complete Level 8.
Discover the secret.
Destroy a melon.
Kill a Past Patient
Do not do it.
Complete Level 9.
Complete Level 10.