Before yoy read my review for this game, I'd like you to look at my hours, yes, 2 hours. However, I played this game in offline mode, alot, and because of steam then, it never recorded my hours, I have tried co op with a friend of mine, so I at least have perspective on this.
-You may now read the review! :D
Now, to be fair, I DID have fun playing this game. Sure, at first glace it just looks like a simple game; but while the controls are very simple, the actual combat is extremly complex (stabbing, hand to hand, throwing, catching, etc). To put it simply, it's generally a good game, it's fair, it's fun, and it is very challenging to keep you interested if you're into this. Overall, I'd say for this genre of fighting games, it's perfect. But you look above and see the thumbs Doooown. Two main reasons.
1. If you are not really into fighting game, but you do enjoy them, then it seems perfect to get this game; don't. Honestly, the game doesn't give that much content, there are only 4 levels in the game, which is understandable, since the actual level design is marvelous, but for most people who play fighting game, they want levels where you can perform combos and such; where in Nidhogg; it's not about combos, but about speed; so really, this game ISN'T under most fighting game genres. To put it short; it's just generally not a fighting game; it's just a game of tag, with swords.
2. The price; even if you are into this game, and the game alone, honestly, for 15 bucks, I could buy the binding of isaac for 5 dollars, and get about 10 times the amount of content in this, I'm not even kidding. Isaac aside; there isn't much play value if you don't have a controller (Sure, you can play without the controller, but it's extremly awkward using the keyboard at once when you are in a really tense situation); and even if you do, you'd probably get about 15 hours worth, before you and your friend gets bored entirely. While the game is VERY well made with excellent work, I'd only get this game during a sale; to me, the game is worth about 6 dollars at the most.
One thing I would like to note that, this is simply my opinion, because alot of people in the review section have good points about the game, if possible, give this game a go, it didn't satify my tastes, but it certinly did for alot of other people. So who knows, maybe you'll be that badass ninja guy who can throw his sword like a boomerang, and kill 2 guys in a single swing. Who knows!