While I went into great detail about the entire system of effects in the Impact Effects post, I just wanted to quickly share the sprites I made for the Sword Swing and Sword Slash effects so you can see exactly what's playing out when you watch our characters attack each other. It took a good amount of iteration on these to get the effect I wanted and the great feedback I got from people I showed it to was instrumental. Anyway, the sprite for the sword swing effect looks like this:
Read The Full Tutorial (And Play With The Unity Content) Here!