I died 67 times trying to do level 4 on Verteran

Maybe I should have dropped a difficulty level. The RPG troops seem too accurate for my liking.
Not sure on the controls. They seem different to the demo, but hard to see really. So many people talking about them might be making me imagine they arew changed? I don't play/own enough FPS games for it to be a major problem or for me to have enough frames of reference. i am struggling much more than I did on Resistanvce 2 on SP, but I am putting it down to the AI/difficulty, rather than the controls.
rp2000