maybe i need to see more of shizune first
Shizune has rarely been seen in battle, but from what has been seen of her skills thus far, it appears that her techniques are mostly based solely around poison. Being a medical-nin, she has to keep her distance in battle, making sure not to injure herself so she can be of use in healing her team-mates when needed.
During her battle with Kabuto, Shizune is seen using Poison Mist, which creates a thick cloud of toxic gas capable of being fatal even if only a mere whiff is breathed in, as noted by Kabuto. She also uses poisoned senbon in a variety of ways, including firing them from a concealed wrist-mounted device and spitting them out of her mouth. Kakashi Hatake mentioned that Shizune was responsible for instructing Sakura on how to imbue her weapons with poison.