Akane

Akane's a fun little game. You run around a little arena, about 4 times as large as your screen and swing your sword at enemies that swing their swords at you. One hit is one kill, for either party. Want to feel safe? Use a gun instead. At least until you run out of bullets and have to recharge by killing with your sword more. Kill fast enough to rack up a combo and unlock a special move or two which can take out a lot of enemies at once. And speaking of enemies, there's different types. There's the regular sword guys, the rarer gun guys, the as-rare-as-the-gun-guys tough guys who don't die in one hit, and then the boss which gets stronger every time you kill it. Complete some challenges to unlock new gear which has minor effects on gameplay, and... yeah, that's about it.

Honestly, I liked playing Akane. The combat's fluid and responsive. There's nice attention to detail like swords clanging together or deflecting bullets (which can actually hurt those they bounce to). I'm a bit against dying in one shot, as there's a big difference between playing perfectly (never getting hit) and playing near perfectly (getting hit very very rarely), which you don't want to force on people, but for such a short game, it's actually fine. The challenges are difficult, but not overly so, and the game requires real skill (even if it can be cheesed a bit).
But as mentioned, the game's real short. You'll see the gist of everything within 30 minutes (15 if you're good), and then it's maybe a couple of hours more before you feel you've exhausted the gameplay. I didn't unlock all equipment, but I didn't feel the desire to.

Overall, good game, too short. The low price point might make it worth a buy, but you're not missing out on anything if you don't. Technically I wouldn't recommend it, but I won't judge. I had fun for about an hour, and maybe that's worth a couple units of money for you.