When Victor realized that he wouldn't be able to advance as quickly as he would have liked, he began to act cautiously in order to eliminate as many enemies as possible on the way between him and the cave.
After killing the cleric, Victor found the group's archer who had become a zombie and, like his fellow cleric, the archer was quickly killed after a sword split his skull.
The afternoon was just beginning over the mountainside, but the sky was dark, indicating that the cloudy sky Victor saw in the morning was nothing.
A storm was approaching, which also indicated that Victor would have little time if he wanted to try Elban's theory about daylight, because perhaps Victor wouldn't even have the light itself in a few minutes.
Even so, Victor continued to work cautiously, his steps carefully planned to avoid making any noise that might attract more zombies.