Level four
And just like Bernard thought, if he didn't deal a fatal blow to his opponent then he would not be able to receive any experience points, it was just like how the game system recorded damages in the game and categorize them into a type normal of damage and critical or fatal blow.
This made him understand that his system also does the same thing and could also categorize how powerful his attack was inside the game not only that it also determine if the attack he had delivered to his opponent in the game if it was powerful enough to startle his opponent or send a strong shock wave to their mind in the real world depending on how powerful the shock wave was only then it would be considered as having dealt a fatal blow.