The following are some Dream Symbols and their generic meanings.

Ammunition, bullet: Preparing and arming oneself. Having the wrong ammunition may denotes ineffectiveness or using the wrong tool/method to do certain things.

Argument or quarrels: Possibly signifying internal conflicts.

Aries: Meeting someone in the dream who is born under this sign  represents an aspect of self displaying the qualities associated with the  sign. Aries are often assertive, aggressive, reckless, energetic, pioneering,  brave, confident, selfish, quick to anger, impatient.

Armour: 1.  Putting on a false front.  2. Associated with protection and being defensive.

Artist: Possible denote the creative aspect of oneself.