The gameplay is straight forward, but for a horror game this isn't bad, as it is not bogged down in mechanics, but rather built in atmosphere. But if you are looking for a combat or mechanic filled experience, this isn't it. What you do get is a complete story about guilt, and it does a great dive into the effects and how one can live in survivor guilt.
Overall it is worth a try, and you should definitely try it out yourself, as well as show the developer some love. It's a nice experience, and worth diving into.