Killing 
To dream that you kill someone portends your overwhelming tension which may cause you to blow your top as you are likely to lose temper and self-control. Check your emotions and assess if you are harboring rage or bad feelings towards the person you killed in your dream. Your dream may be an actual projection of enormous anger or hatred towards that person. On the other hand, you might be merely seeing yourself in the person you killed. You may be wishing to end the traits that this person represents within you. Is it dawning on you that you might end up as an equally scornful person?
To dream that you have been killed symbolizes a certain level of inconsistency between your actions and your emotions. Alternatively, your dream may be pointing to sudden major changes happening in your waking life.
Your dream may also represent a part of you or your life that you have ignored has been resulting to a number of annoying incidents. The act of killing may be a dramatization for killing these negative and embarrassing traits and habits.
Vampire
To dream of a vampire is a representation of many things. It represents your sexual nature as well as death and fear. It combines civility with violence. Consider who in your life wears these two faces.
Someone in your waking life, who possesses a great deal of charm, may eventually turn hurtful and violent towards you and your feelings. You are most likely very aware of this possibility, but feel you cannot help but spend time with them. Vampires may also be a physical representation of the decision to have sex for the first time. Conversely, the vampire may indicate that you are exhausted, whether physically or emotionally, in your waking life. Otherwise, you may suffer from a debilitating addiction to alcohol, drugs, or sex.
To dream that you yourself are a vampire represents how you use those around you. You are using everything you have to further your own goals.
Blister
To dream that you have a blister implies that you are wasting your efforts on a rather insignificant matter. Pay attention to how the blister formed. To dream that you got the blister from manual and hard labor means that you aren't trying hard enough to resolve minor issues. To dream that you got the blister from a burn indicates that you are experiencing trouble in a relationship.
Notice where the blister appears. If the blister is on your hand, then it implies that you are struggling with control and authority. If the blister is on your face, then it means that you are experiencing problems with how you view yourself. Perhaps you are feeling inferior or unaccepted.
Leeches
To dream of leeches feeding on your blood signifies a part of your waking life that is sapping your energy and enthusiasm. Leeches in your dream may represent persons around you, old habits, or ill feelings. This will affect your mental and emotional state. On the other hand, if your body is covered in leeches, it indicates repulsion for what you have done or guilt towards someone you have wronged.
Massacre
To dream of a massacre implies that you prefer to go along with the beliefs and opinions of others. You should be more assertive and express your individuality.
Nobility
To dream of that you are related or associated with nobility suggests a preference for shows, pleasures, and position rather than intellectual pursuits.
Hyacinth
To dream of a hyacinth refers to intense feelings of jealousy or resentment.
Mosquito
To dream of mosquitoes implies that you are being used and manipulated by others. They are exhausting you emotionally and mentally. It also means that you will use all of your efforts to defend yourself against their assaults.
To dream that you are killing mosquitoes indicates that you will be able to prevail over hardships to gain wealth and joy.
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Barnacles
Dreaming of barnacles implies stubborn thoughts may be persistently bothering you and refusing to shift leaving you feeling frustrated. There is a message of acceptance, relaxation and ultimate victory within a dream of barnacles. Dreaming of barnacles on a boat heralds hints of travel and adventure whereas barnacles on the skin is more inclined to suggest stagnation and the need to forgive and forget.
Tourniquet
To dream of a tourniquet refers to feelings of burn out and low energy. You need to push yourself to persevere and not dwell too much on your weaknesses.