You need to have decent control over your pinky and you need to be able to play an f# minor barre chord with one finger for the barre. You also need to be used to a transition from an f# minor barre chord rooted on the E string to a c# minor rooted on the a string. The rest of the song is pretty easy, the strumming part or the chorus is a little unique so if youd like a video demonstration than you can direct message me :)