Completed - Resolved
Captured Lord Coleem
During "Heart of gold" mission my workers captured Lord Coleem which should not be possible. Savegame. I picked him up from prison, dropped on my creatures, they killed him. But when I finished the mission I did not get "Nature's call" achievement and somehow unlocked "Together forever" achievement.
Customer support service by UserEcho
This will require further review. Likely in the new year.
Related to this bug