Three hours later, an alert sounds through the Shelter.
> Warning! Drone under attack! Hostile entities detected!
Lu Tian rushes to the holographic display, where the drone's live feed shows a horrifying sight—a group of mutated creatures are tearing apart a collapsed building, their sharp claws cutting through metal like butter.
> [Threat Level: D]
The drone tries to retreat, but one of the creatures leaps unnaturally high and grabs it midair, crushing it instantly.
> Resource Collection Failed. Drone Destroyed.
Lu Tian grits his teeth. "Damn it! I need stronger defenses."
A new mission appears.
> Mission: Protect Your Resources
Rewards: 500 Upgrade Points
His eyes widen. "500 points? That's enough for serious upgrades."
Determined, he immediately selects Defense Turrets, spending 300 points. The Shelter rumbles as two automated plasma turrets emerge from the walls, positioned near the only entrance.
> Turrets Activated. Defensive Perimeter Established.
"Let's see those monsters try to break in now," Lu Tian mutters, watching as his fortress evolves into something more than just a shelter—it's becoming a stronghold.
But deep in his mind, a question lingers: If these creatures are already this strong… what's waiting for me at higher threat levels?