In the Fractured Online HP system, you don’t die if that bar reaches 0 when you get knocked down. But it will make you become unconscious for 30 sec and make 15% of your bar turn purple.
Below are two cases in which you will die:
1. While you are unconscious, if you are executed, you will die.
2. When you get knocked down seven times, your bar becomes completely purple, and you die.