Here is the full list of all 36 Way of the Passive Fist achievements.
Clear Story Mode
Defeat the final boss
Perform the Gravity Well attack
Discover 20 different caches
Find the turtle soup healing item
Complete Chapter 7 in under 20 minutes
Defeat the boss of Chapter 7
Defeat 500 enemies
Obtain all gold medals in a Chapter
Defeat the boss of Chapter 5
Achieve a combo of 50
Defeat 100 sun worshippers
Perform a Super Slam attack
Defeat the boss of Chapter 3
Achieve a x5 multiplier
Defeat 100 enemies
Perform a Power Punch 5 times in a single scene
Defeat the boss of Chapter 1
Parry 100 attacks
Obtain a gold medal in any scene
Perform a Power Punch attack
Defeat at least 5 enemies at once with the Gravity Well attack
Defeat a boss without taking damage
Complete any Chapter (1-9) without activating a checkpoint (in Story Mode)
Defeat 100 robotic enemies
Defeat 100 plant creatures
Achieve a combo of 100
Clear Arcade Mode (10CC or 1CC) without dying
Play through any Chapter twice in a row
Find a 1-UP item
Clear 10CC Mode
Accumulate 400,000 XP across all Chapters
Parry 10,000 attacks
Obtain all gold medals in all scenes
Clear 1CC Mode
Clear all Chapters on Way of the Master