Her choice of weapons are two daggers, which she uses with great efficiency once she gets close.
Whenever the succubus notices the player, she will rush towards him. Upon entering melee range, she will do a small jump and stab the player with her daggers. She can endure more shots to the body than the Incubus, but she still dies to one headshot.
Upon death, she has a low chance of dropping the Vampire Cassette #1.