I've just completed GR:AW. Thank you for the help people have given on this forum. It's good to have a forum to discuss things constructively rather then taking the ###### out of each other. I don't tend to replay games once I've finished them so I probably won't be visiting the forum until I play GR:AW2 which probably won't be for a year because I'll be working abroad until then. This will also give the developer sometime to sort out any bugs, I used v1.35 which worked well but from reading other people's comments they had problems with bugs in earlier versions which is a real shame.
I thoroughly enjoyed played GR:AW, I've played a lot of FPSs such as Half Life, F.E.A.R. and Doom 3 and have never needed to use a player's guide but I had to with GR:AW because you had to think about what you were doing rather then just going into a room and shooting everything. The storyline also kept things interesting.
I think the checkpoint save system added to my enjoyment as well, I did hack this for the first 3 missions but soon got used to the checkpoints and thankfully managed to finish the rest of the game without having to do hack. I think there were a couple of points in the game where the checkpoints were too far apart and in those situations you had to spend 5-10 minutes shooting easy targets before you got to the really challenging bit. It got a bit repetative for me in these parts but they were few and far between.
The AI of the teammates in this game led to frustration in some parts when they decided to take the long way around to get to a position and end up walking past tanks and snipers so I hope this is improved in the new game.
I picked this game up for £5.99 from HMV in UK so absolutely great value.
Take Care.