Here is the full list of all 18 Karate Master 2 Knock Down Blow achievements.
You need to earn 1500 bucks.
Requires KI 10
Win the Kumite tournament.
Requires speed 10
Defeat the bull.
Requires tai kitae 10
Requires toughness 10
Requires strength 10
Win a Karate-Pro tournament.
Defeat the legendary Sensei Matsu.
Jump over a car.
Reach fame 100.
Win a ring event.
Heal yourself in the hospital.
Win a Full Contact Karate tournament.
Win a Bogu Kumite Tournament.
Defeat the bear.
Defeat Oboro.