Krautsalat’s review published on Letterboxd:
Chang Cheh's late phase masterpiece has all the color coded ninja action you could ask for: Sparkly golden ninjas with deadly hats, brown ninjas that hide inside trees, blue ninjas that hide under water, red ninjas that shoot fire and smoke, mole ninjas that hide in the ground and even regular old black ninjas for the night. Non-stop action with flawless choreography, inventive weapons and grotesquely gory deaths.