It's not a remake but a continuation of the series. To be short, it's OK, but still essentially a HL2 mod with a rather gratuitous bikini scene that couldn't ponder more to the immature teenage demographic if it tried.Now I'm saying this from memory, it's been a long time since I played either game, and I haven't played Sin Episodes, the modern remake.
I've actually decided to push it up again, just to see how it feels to play it now. I recall that the action itself was fine (it had like three weapons, but still), but the beginning scene was tiring even for a 16-year old.
There was no more episodes to it and frankly, that's hardly surprising. One annoying thing, is that they made the protagonist silent for absolutely no fucking reason at all, while the previous game at least tried to deliver something witty from time to time to you.