Great work, very quality submission! The game is fun, despite the constant deaths, and I like the dynamics of needing to thwack your enemies while avoiding thwacking your partner.
In a more polished version, maybe a longer chain would be a good thing to experiment with? As is I think there is usually too wide an arc that you can't swing in without damaging your partner, and it would be cool to see if you could tweak that challenge element so that you can purposefully avoid that state with skill. Also, in a polished version giving the player some way to better hold their own against archers would be great.
Very good work!