Despite only a short nap, he seems to be reinvigorated, doubling up his efforts to keep a watchful eye and ear out for danger. However, despite this, you don't get far before he hides you as you hear loud footsteps, from something clearly heavier then even orcs, approaching. Apprehension fills him as he weighs the options. It seems that what is coming is dangerous and will be passing dangerously close that you might not go unnoticed. While he seems to think he could win in a fight, he doubts he could get out unscathed, and it might draw further attention which he is less certain he could protect you from, but trying to move comes with its own risks. Combined with the fact that you care barely see anything more than nearby silhouettes in the darkness, he is getting extremely worried.