Beer, Drunk and Death [Anyone]

Peter was in a bar late in the night drinking away when he heard a gunshot and went to investigate, suddenly he saw movement, the person rushhed toward him aim a gun at Peter , Peter said "Put the gun down now." the other man said "No." and fired a shot a Peter, Peter said "You just made two mistakes, first not putting down the gun and second shooting me." then Peter rushed forward and slammed the mans head to the ground, then another gunshot was heard and the man fell down to the gorund dead, when Peter turned around he was shot in the abdomen and he fell down.