Betrayer is quite extraordinary. Its atmosphere is amazing, with it's beautifully crafted black and white world. But it's an empty world, one that needed way, way more content than this, because the gameplay becomes quite repetitive after a few hours, even if the story is mysterious and intriguing.
You end up washed ashore and you have no idea how you got there or where you even are. Moving forward will act as a small tutorial and once you enter the next area the real game begins. Soon you'll find a deserted village, a village where you find a Maiden In Red (which the story is all about) and a bell. A bell that belongs to the village. Restore the bell and you can ring it, and it will instantly transfer you to an even darker world (please note that that's not quite true; the area remains the same, but the enemies and NPCs become different) where ghosts can be found. These ghosts tell a story and it's up to you to find more clues and solve the many mysteries this world has. You can switch between the light and dark world on the fly with the ring of the village bell and both of these worlds contain clues, found as letters or other objects. With the press of a button you will hear voices and sounds that will guide you in the right direction. Follow the sounds to find your next clue(s). An original concept that works very well, especially because it's an open world. I really liked it.
Of course, there are also enemies to be found and these are actually quite tough at times. But defeat them and they'll drop loot. Loot that you might desperately need later on, because the enemies become harder to defeat. Other ways to gather loot is by buying it from a digital salesman in the village or by find treasure chests scattered across the lands. However, if you get slain by an enemy you'll drop all of your loot and you have one try to get it all back. Die before getting it and you'll lose everything, with no chance of ever recovering it (Dark Souls anyone ?).
Enemies can be killed with stealth. Just use your bow to silently take care of them. Or you can kill them with help of the wind. It will mask your sound. Another original concept that works very well. Unfortunately, the AI disappoints from time to time so it's not always the way to kill off enemies. Enemies might never hear you even if you're only a few metres away from them, and other times they come running to you from miles away. It's all over the place and I was disappointed to see a polished game like this have such crappy AI.
There are several areas in the game and exploration is key for solving the stories. But like I said, it becomes repetitive after a few hours because all you do is look for clues, ghosts and treasure chests and kill enemies. There's not much else to do in this game. Now, I do have to say that it kept my interest all the way through (which lasts about 10 hours), mainly because there's no handholding. The lore and stories are yours to interpret. And this is exactly what also made Dark Souls so fun to play. You get small hints of what's happening or happened and it's up to you to think of what might have actually happened. Good stuff !
Betrayer is an excellent game and I'd love to see a sequel. But please, fix the AI and make the world itself a bit more interesting to explore. Recommended !