Shin's abilities are still largely unknown. However, given that he was experimented on by Orochimaru and survived, it stands to reason he is very powerful. To which, he was shown calmly engaging the highly skilled Sasuke Uchiha in battle, able to use multiple misdirections to nearly defeat the Uchiha, showing a very cunning mind as well. He seemingly only failed to defeat Sasuke thanks to a surprise attack from Sakura Haruno, who he later also nearly defeat shortly after recovering before Sasuke saved her as well.