The movements in the kuntau that you show, reminds me of the Astra college in our gampong. A martial art that relies on elbows and knees, and more hands-on. I do not know whether Astral and Kuntau have a relationship, but as I know, the moves at the Astra college are very minimal foot. The blow can be called deadly, especially if an Astra has managed to master the "scoop".