Defeat

Ethan's experiment had revealed a significant revelation about the undead knight's behaviour. 

It appeared that the undead knight would only retaliate with a corresponding level of strength to what it received from an opponent. 

This finding was crucial, as it suggested that defeating the undead knight might be more manageable than he had initially thought.

As he cautiously approached the undead knight, Ethan tightened his grip on his sword, fully aware of the slim five-metre gap between them. 

When Ethan reached the five metre mark, the forcefield, initially blue, shifted to red once again, and the undead knight's body twitched, but it refrained from attacking immediately. 

Ethan deduced that the lack of an attack was likely due to him not having initiated any offensive action yet.

Seeing this, Ethan slowly took several steps back to return to the forcefield.