Just played through this last week, really enjoyed it. Hope they make another one, but I suspect they'll need a new main character based on how the story wraps. That or a new location, which isn't something I'd want. Really liked the Hong Kong flavor.
If you're referring to my post, I didn't spoil anything. Merely implied that the story ends in a way that makes a sequel difficult without changing a lot of things.
It's a shame Sleeping Dogs dlc left a lot to be desired.
The story is great and the fighting mechanics are brilliant.
Highly recommend this game since its cheap to get nowadays.