I got through 50% of this game over a few hours one afternoon and finished it the following day. Each 'level' seems to be split into 2 or 3 short chapters which carry varying degrees of difficulty. I had to repeat a few missions, but it was over remarkably quickly. If I'd spent £40 on this back in the day, I would have felt very short changed.
There's no achievements trophies on this game and there is no rumble activation for the controller (two principle drawbacks of the PS3 at launch). It appears no effort was made to patch this game post Sony's decision to steal the achievements concept, or when they finally decided to support rubble packs having duly coughed up for the licence.
A fundamental issue I have with the game is that it perpetuates the familiar narrative of "plucky, but useless Brits" get saved by a brave Yank with superior resources (and an apparent inability to speak). Our American saviours seem to be required to trudge across England vising the most bizarre locations such as Grimsby and Nottingham. All I can say is that whoever made this game has clearly never been to Grimsby or Nottingham.
Don't get me wrong, this isn't a bad game, especially when you consider it is 15 years old. The issue is that it pails in comparison to its contemporaries. Gears of War, Halo 3, Call of Duty 4: Modern Warfare or the Big Daddy that was Bioshock are better in every way. Looking back at reviews and posts from the time of release, it's amusing to see people trying to defend the game by making comments such as, "I didn't even notice there was no rumble as the game is so good". In reality, Resistance on a PS3 isn't even close to the experience of Halo 3 on an Xbox 360. In fact, its not even as good as Halo 2 on the original Xbox. Yes, the PS3 won the console war eventually, but in 2007 the 'best FPS' title was definitely not with the Sony camp. Right, I'm off to see what the second installment has to offer. Trophies hopefully.
