Because of the appearance of the level 3 zombies, Treyton ordered them to move faster to leave the area they were in. However, because of the number of zombies that kept coming, they weren't able to move as fast as they wanted to, even if they tried.
Following Treyton's order, most of the other members began using more of their abilities so they could advance quickly.
They indeed cleared the zombies faster than before, but they still weren't able to move away as fast as they wished.
It took them at least two hours before they finally managed to get away.
Of course, they would probably have been faster if Luciel had also used his ability, but he didn't because he was still able to kill the zombies properly without any problems at all.
Luciel just focused on training his physical strength and didn't even use his ability, even when Treyton said that they had to go faster.
There was no emergency or anything that needed immediate action, so he just focused on what he needed to do.
