To challenge the extreme level of difficulty, one must train with mountaineering types of equipment such as fixed ropes, crampons, carabiners, ascenders, jumar, etc.
The difficulty of the Mount Everest Expedition starts at Death Zone at 8000m above sea level. The body loses its energy because of extreme temperature and thin air. Even the highly experienced climbers may face impaired judgments, heart attacks, or any other difficulties So, one needs to be more careful regarding the weather and climate in the Everest region. To challenge the extreme level of difficulty, one must train with mountaineering types of equipment such as fixed ropes, crampons, carabiners, ascenders, jumar, etc. Also, they must train to get used to low temperatures, and low oxygen.