Complex sentence: They dress impeccably, always walk as a group, speak in an adult manner, behave maturely but show no conscience or love, and demonstrate a coldness to others, causing the villagers to fear and be repulsed by them.
Split into simpler sentences: They dress impeccably, always walk as a group, speak in an adult manner, are very well-behaved but show no conscience or love, and demonstrate a coldness to others. All of this has caused most of the villagers to fear and be repulsed by them.