For people used to shooters it takes a few deaths until getting used to the different control settings (one tends to press always the same button to shoot)
, I don't know if it is the same with the PC.
It is a different kind of shooter, in a way similar to the James Bond games, similar but no the same.
If real is what you can feel, smell, taste and see, then 'real' is simply electrical signals interpreted by your brain
From The Matrix