Wait a moment, the timeline’s a little bit off 
Chapter 4: Problem Starts (2 days ago)
Chapter 5: William injured (1 day later)
Chapter 6: 3 Days later
Total - 6 days
Has William been fighting for two weeks outside the cave? If so then was he fighting the chief before he was fully corrupted by the staff? I might just be mis-reading this if the chief only put out the notice they were having trouble 2 days ago?