The Sentinel didn't have the time to react to the precipice dropping down.
Such a puny precipice wasn't even going to harm its durable armor. Thus, it found it humorous that the person it just killed was trying this final ditch effort.
As the massive precipice dropped from the ceiling, the Sentinel snorted coldly, not paying in mind.
What made the Sentinel roar in laughter was the fact that it didn't even strike at them but instead slammed into the ground.
Just when the Sentinel was about to turn around and begin a slaughter fest with the other nuisance ants, an earth-shattering impact suddenly echoed in the room.
The sentinel failed to realize that the precipice it looked down upon, was capable of ushering a force in which the collision reverberated through the entire boss room, creating deep cracks that rapidly spread outward from the point of impact.