The guard is well trained in fighting and looks to have avoided the last two slashing attempts at his face area , there was a slashing attempt by the bald guy as he was getting up after the front kick knock down , the slash may have connected . Things happen so fast with sharp weapons be it a broken bottle or knife. I like how near the end of the video when the bald guy refuses to give up his weapon the guard slams the hand holding it into the guys's own head . High level skills by the guard , if the weapon was a longer bladed knife things might not have went his way .
He could have gone full soccer kick mode on the bald guy's head after the knock down punch and as we saw the bald guy had plenty of fight left in him after the punch knockdown and knee to the ribcage .
Experienced street fighters often really put the boots to their opponent as someone you think is finished can get back up and still kill you . The guard showed restraint , he deserves the store owners Christmas bonus .