Fill graveyards with at least 400 graves.
Quite a sinister achievement, which will require causing mass death in your town.
- The largest cemetery will only fit 138 graves, so you will need a lot of space available to complete this. The larger maps make this easier to complete.
- Tombstones decay in 4-6 years, so the best way to get this is by causing a famine (running out of food), which will cause a large amount of deaths in a short period.