It's a very solid fighting game, it's not 3rd strike or Tekken 3 or another fighting game with 3 in title but it's good nonetheless, and here's why.
Character roster is not robust but it still covers a variety of playstyles, all rounders, zoners, grapplers and speed characters... To put it shortly, despite the lack in numbers every character feels different from one another.
This game has best tutorial I've ever seen in a fighting game. It doesn't just show you which buttons do what, this tutorial will explain you every little thing about how this game works and how each character plays and when you're done, there's still a lot of space for creativity and improvement.
Story mode is... fine. I'm honestly not a big fan of it, story itself is quite predictable and largely based on one or two standard tropes that many fighting games use. Final boss felt a bit disappointing for me but it's kind of a hit or miss situation. Some will like that there's a special character that is very different from anyone else in a very fundamental way but I personally prefer when at the end you face just a character from the roster like everyone else you've been fighting before. Also at the time I was beating the game it seemed like the only way to beat the boss on higher difficulties was to just cheese her out and that's not really fun in my opinion but it was some time ago and by now people probably got much better at the game and found out other, more interesting ways to beat the boss.
Multiplayer... I wish I could say something about it but I only managed to play it once with some guy from Australia (and I live on the edge between Europe and Asia) with both of us having ping over 150 or something like that... not exactly enjoyable expirience (though i have to say lag compensation was rather nice even in that dire situation) but it was the only expirience avaliable at the time. I recommend you check out something like steam charts if you buy this game for multiplayer, and check if you have some sort of community for this game in your area.
Visuals and sound are very good. Background music is not distracting and yet very charming, reminds me of something Yoko Kanno would've composed but it still sound quite unique and recognisable. Animation and art is beautiful and smooth, yeah there are boobs and butts but they offend as much as Switzerland. There are plently of stages and all of them look amazing. Game looks and sounds very good, period.
And to finish it off, gameplay and controls. They are both very, very solid. I use a fight stick and it works like a charm, as it should, obviously. Keyboard is also fine though, it's much harder for me to play on keyboard, but I don't see why you wouldn't be able to get good results with it after some practice, though I have to say fight stick is real sweet. Game mechanics are way beyond what you would expect from an indie dev, gameplay feels very polished and refined, every time I lost I knew that it was my fault and what that fault was and that's a big deal in any game.
So yeah, this game is good, I liked it, pros overwhelm cons and I wish this game sells even better so there would be more people to play with.