This dream may symbolize feelings of fear and powerlessness in the face of a looming threat or danger. The presence of Michael Myers, a notorious horror movie villain, as the antichrist could represent a sense of evil or malevolence in your waking life. The idea of the apocalypse may also reflect a sense of impending doom or chaos in your personal life or in the world at large. The fact that you and your fiance were hiding with unknown people could suggest a feeling of isolation or uncertainty in your relationships or social circle. The decision to kill yourselves in order to escape to another reality may symbolize a desire for a fresh start or a need to escape from a difficult situation. The fear and panic you experienced as your life force slipped away could represent a fear of death or a fear of losing control. Overall, this dream may be a reflection of your subconscious fears and anxieties, urging you to confront and overcome them in your waking life.