Summary
Now me personally, I don't have or play faith, but I DID watch the entire game on YouTube. So I will do my best to explain it.
Faith, like many horror games, utilizes the limited resolution and picure to it's absolute degree.
Deep in the woods lies a stagnant house, abandoned for the past year after an exorcism gone wrong. You play as John Ward, who's returning to the Martin house to finish what he started: the exorcism of Amy Martin. First, though, you have to get to the house. And as you travel through the empty woods, you'll soon find that Amy isn't the only thing you should fear.
Links
Personal Thoughts
Along with utilizing the limited resolution and overall creepiness tied to 8-bit horror games, Airdorf also makes use of something called "Rotoscoping".
This is a function where someone takes a video of them doing something, and then draws over it and makes an animation out of it. Along with this, when comined with primitive but creative 8-bit resolutions, it really adds a new level of horror.
Take the gif above, for example.
When the rotoscoping appears, it really catches you by surprise because it's not something you would expect to see in a game that has all 8-bit gameplay.