This has been out for PC for some time, but it finally came to PS4, so I picked it up. It's a very fun two-player fencing game. Looks really simplistic at first, but there's actually quite a bit of depth to the combat mechanics. It's a little pricey considering how little content it has ($14.99 reg/$11.99 PS+), but it's a hell of a lot of fun.

Played a little bit of it with some friends when it was first released on PC.
It was fun for a while, but like you said, fairly pricey considering how little content there is.

Wouldn't spend money on it myself to be honest.

Amazingly fun game. Heres a vid of two of my buddies playing. https://www.youtube.com/watch?v=5YrQw25j520

Okay, before watching the video I thought this was the game you guys were referring to... just never knew it by name.