Finished it myself the other day (bought it in the xmas sale on Steam). I liked the first one, and always thought it was underrated.
Dog days though...it's is a dog that should have been put down before it was released. Poor story, uninspired dialogue, shockingly short, and just feels the same from start to finish. The first one had variety - pretty much every level was a different setting, yet its sequel just seems totally grey from start to finish with neon lights over the top every now and then.
When I finished it, it felt as if I'd reached the end of part 1 of a 3 part act. When people say a game is only five hours long, it'll normally take me 8-10 hours. I always take my time and explore everywhere I can, but checking on Steam, this literally was a 5 hour game.
At least it only cost a few quid.