Here is the full list of all 31 Tales of Hongyuan achievements.
Game start，buddy.(Finished the task: Your Trip)
No purchase no kill.(Guided wrong way during the task：Spirit of Nature )
Finished the task: Bandits'Road
You know ,there is a mistake.(Fought with Xiao during Bandits'Road)
Finished the task: Ruo Xue
Finished the task: THE PAST and Face to the past
For the true love,you must be honesty.(Spoke the truth during Hero&Beauty)
Finished the task: Be chivalrous and Be a knight
Finished the task: Authority&Right
Helped Fang Bai during Brothers Or Not.
Helped Fang Hong during Brothers Or Not.
Finished the task: The First
Finished the task: Bard Nonsense,Right or Wrong and Faith&Honor
Finished the task: Chess Mate
Finished the task:Wine!Wine!
Finished the task:I Need Books and I Need Nothing
You make a match.(Finished the task: Find People)
Young men don't want to get married.(Finished the task: Reward)
Finished the Game.
Finished the Game in eight hours.
Beaten the boss: Xiao Yao,Shang Jun,Kua Fu,Sword Spirit and Heaven Eye
Beaten every kind of enemy
Beaten a thousand of enemise
Built the Hall（lv.1） on the Lonely Island
Built every building on the Lonely Island and then upgraded them to max level
Unlock every kind of support
I believe I can fly...(Got equipment: Bird symbol)
You will be a qualified parent.(Got equipment:Holy Beetle)
Unlock every hero's hidden skills
Got equipment: Chain Sword
Got equipment: Test Symbol and Test Ring, then upgraded them to max level