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