Hehe, Let's see Who's going to Kill Who

Meanwhile, the Bio-mechanical soldiers who were stationed on the second floor felt the strong vibrations under their feet, and a surge of unease swept through all of them. 

Selina immediately tensed, sharp eyes looking toward the source of the disturbance.

Without hesitation, she motioned for a small group of soldiers to quickly gather toward the blast location with her, to check on what was happening.

As they approached, the scene before them twisted into a nightmarish reality.

The solid ground beneath them began to fracture, enormous cracks splitting open like a monstrous web, spreading rapidly in all directions. 

Selina's breath hitched in her throat as her sharp memory kicked in. She recognized this place, and knew exactly what lay below—the third layer. 

'Who the hell did this?' Selina thought, her mind racing, but there was no time for investigation.