Late reply is late. D:
Valtiel, slow as usual, seemingly slithered from a small gap between the tree line. His late arrival was not without purpose; for his skills to work (or to be far more useful), he needed a large area to use as a kind of spawning ground (and he also had decided to grab a few more clips for the pistol Walter had taken long before the one that had appeared on the desk during the time the zombies had appeared.) He decided not to give an explanation unless they asked for it.
On second thought, the trees that were where he had come from had turned a pitiful black with bloody bandage-like things that wrapped around them would do the job.