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