What about the other dungeon?

The third floor was no different than the first two floors as Liam cleared all the mobs at an insane pace and once again started searching for the passageway that led further up.

The dungeon itself was quite huge that it took twenty and thirty men groups about an hour to finish in entirety. But for Liam, it had only barely been a few minutes since he started the run, and he was already on the third floor.

From there, it again took him only a handful of minutes to locate the next passageway. With every discovery, he was becoming more and more excited as he couldn't see the limit of where this was headed.

While inside the tutorial game, though the opportunities were plenty, his time was cut short but now, he had the time. Only the first wave of the apocalypse had been triggered up until now. 

He had plenty of time until the real horrors began to show up. The unfortunate part was that he had no way to prepare for this.