Complex sentence: This mistreatment included beatings, deprivation of food and sleep, being subject to mock executions, intimidation, and being burned with lit cigarettes, in each assault, their assailants took great care to avoid marking their faces.
Split into simpler sentences: This mistreatment included beatings, deprivation of food and sleep, being subject to mock executions, intimidation, and being burned with lit cigarettes. In each assault, their assailants had taken great care to avoid marking their faces.