Why did ash kill john rider?

Ash killed John Rider in a moment of self-defense during a tense confrontation. Rider, a dangerous and manipulative antagonist, posed a significant threat to Ash's safety and well-being. The act was driven by a combination of survival instinct and the need to protect himself and others from Rider's violent intentions. Ultimately, it was a pivotal moment that showcased Ash's desperation and the lengths he would go to ensure his own survival.