The knowledge of pressure points on the body and how to strike (activate) them with the correct angle and direction.
Strike and kick with 100% accuracy and confidence.
Use of pressure points to release the neck, release wrists, elbows, knees, once the joints are released then adding a lock or take downs become so much easier.
If you want to learn how to do fast and efficient knock outs.
For those who want to achieve a Black Belt in Kyusho Jutsu.