Greyscale is an achievement in the Shadow Plague DLC. It involves infecting the scientists investigating the skeletons at Stonehenge
How to get this achievement? Edit
- Start in Greenland.
- Evolve Therianthropy and Night Wraith and keep moving so you don't get spotted
- Wait for the headline "tourists topple standing stones at Stonehenge"
- Evolve Shadow Blessing and start spreading your plague. Make sure to devolve any mutated traits.
- Evolve Droplets and Fomites transmissions and you should get a "mutated skeleton found at Stonehenge" headline. Evolve all Droplets, Fomites, Air, and Water transmissions and keep moving. As long as you don't get spotted eventually you will get a pop up saying that your disease has somehow managed to bypass all filters and infected the scientists investigating the bones. This will give you the Greyscale achievement