I appreciate your desire to help the wiki and get rid of vandals, but approaching me by "demanding" for rights wouldn't be the way to go. If you put in a formal request for rights, it may have been different.
Your contributions look good though. For now, I am going to decline. If you continue working on the wiki and further prove your capabilities, I will consider granting you rights.
I went ahead and blocked the vandal. If you see another one, contact an administrator to get it sorted. Thanks!