One might think Klaus was fighting a mere machine, which is partly true—but this Mecha Zombie is as real as it gets in Oracle. Normally, a machine like this wouldn't tire or make mistakes.
But that would defeat the purpose of what the Nerds were trying to achieve. They aren't just building a virtual world where warriors can train against monsters and zombies—they're creating a system that simulates real-life combat scenarios.
Yes, they're designing a system that can mimic any form of combat, whether it's a battle of attrition, a fight of precision, or any other style. If your strategy is to wear down your opponent before going for the kill, Oracle is designed to accommodate that.
As you get tired, so will the monster you're fighting. The Mecha Zombie has stamina points, just like you. It also has a pool of spiritual Qi, just like you. This means you won't be fighting against an endless, tireless machine.