The Last Warlord Achievement in Immortals Fenyx Rising
The Last Warlord15
Complete Gong Gong's Questline
How to unlock The Last WarlordStory-related; cannot be missed.
You'll open the quest to go meet Gong Gong in the middle of Nuwa's questline. Follow his short and simple series of quests, culminating with a boss fight, at which point this achievement will unlock.