Monsters, Leo isn't as worried about. Monsters can be fought. But he doesn't really want to lead any back to the convoy, or get V involved in a fight...

He decides not to waste too much time going on foot. Once they're out of immediate reach of the vines, he draws his sword and slashes down.

"Here, go through," he says, gesturing at the shimmering blue portal that just opened in front of them. "I'll come behind you."