The Wandering Village

This will require some planning. First you will need either a Feeding Trebuchet or a Feeding Pump, and an Onbu Pharmacy. This will take some time climbing up the tech tree so just keep your village alive and growing. To speed up the grind for knowledge, build two or three scavenger huts and keep sending teams out onto the map. I found shrines to almost always bare a few knowledge points, but you can also get it occasionally from towns and abandoned ruins.

You will also need resources to make these ingredients, so tea farms and mycologists will be required. Like I said, don't expect to speed run this one.

Once you have the required resources--Onbu food of any type, antidote, and medicine--build three Onbu Doctors.

Right at the start of a new day, 00:00, order one doctor to pet Onbu, another administer the antidote, the third administer the medicine, and finally the trebuchet or pump to give food.

Achievement should pop right after this.