Cool concept but the combat seems like it's doing too much at once. I don't believe that it's truly playable that way, probably just choreographed and animated. There were dodges, parries, weapons, flashy sidesteps, rolling over an enemy's back, several weapons, non-static combos. Seems suspicious.
The only way I could see that working is if they do some pseudo Arkham free flow combat system where there's a "do cool combo" button, a "dodge things in cool ways" button, and so on.