The Suffering's a fun game. I was really harsh on it when it first came out, but back then I was harsh on pretty much any horror game that wasn't Silent Hill. I had a very narrow view of what horror should be, and thought The Suffering was just trashy noise by comparison.
But these days I'm more accepting of genre fiction, which is what The Suffering definitely is. I mean, it is trashy, and it's not even remotely subtle, but... so? It works. There's fun to be had and there are scares to be had. Sometimes it tries too hard to be disturbing, but hey, at least it's trying to do something.
I'm glad it was released free, I don't think I would've given it another chance otherwise.
To be honest, it's not a very good port, but it's good enough. Just keep in mind that unlike most PC games, when it says saving checkpoint, it doesn't actually mean saving checkpoint. It doesn't save until you go to the menu and actually tell it to save. I lost a lot of progress through this misunderstanding, and I've seen it happen to other people too.