Here is the full list of all 31 9 Monkeys of Shaolin achievements.
Kill an enemy in the air without touching the ground.
Running from difficulties won't solve the problem.
Complete a mission in co-op mode.
Gain more points than another player.
Revive another player.
Defeat Fudo.
Finish the game on Warrior difficulty.
Finish the game on Legend difficulty.
Master all styles.
Fully master the third style.
Fully master the second style.
Collect all items.
Fully master the first style.
Collect all weapons.
Defeat Okina.
Defeat the Kasshiki.
Pull 5 enemies with one seal.
Defeat Hannya.
Complete a mission without taking any damage.
Kill 3 opponents with one strike.
Defeat Shikami.
Learn first skill.
The endless cycle of rebirth.
Kill 50 enemies using Qi energy.
Complete the prologue mission.
Finish the game without dying.
Complete all missions.
Try every type of tea.
Deflect projectiles 30 times.
Destroy 30 items by throwing enemies into them.
Parry 50 attacks.