There's a breath or so in which Arther is still under the aim of his gun, but then the other man lowers his too, and a little of the tension in the air between them fades. The sight of the monsters and another man with a gun made him jumpy, but at least he's not the 'shoot first' type and that's nothing to take for granted. The warning and advice is met with a sharp nod, because he's not as slow on the uptake as his trouble with speech would suggest, but he gives another glance at the darkened doorway to make sure there's no immediate threat, as the other man picks up his gear and starts to run.

They're gone for now, and there seems no point in blocking off the doorway because this ghost town is probably riddled with entrances and exits for their lair. He breathes out a sigh, and holsters the shotgun again, making sure the safety is back on. There's no point in hurrying, when the other man is on foot, but he clearly knows more about the dangers of this place and that makes him worth sticking to, at least for a little while. Besides which, he'd feel a little guilty leaving him to become a meal for those things. With his luck he'd end up with another ghost dogging his heels, later.

The sound of the bike starting up again breaks the quiet, and then it's getting closer, but it just comes up parallel with Arthur and far enough to the side of him to make it clear that he's not being run down or run over. For a minute they're traveling side by side, then the bikes moves ahead a ways and turns, and the man stops again to wait for Arthur to run straight at him. "...This is faster." He pauses just a moment, then gives a tiny jerk of his head to make his meaning clear. There's space for another rider behind him, and it's not a taunt but an offer of aid.