To be blunt, if the demo (works properly for me) is representative of the final game then Crytek have lost a sale.
I was hoping for more Crysis, what they seem to have made is the bad bits of Crysis with features from Halo Reach and Call of Duty all mangled up in it.
I wanted huge expansive maps, I wanted my tanks and choppers and alien mistifying doodads, I wanted a degree of freedom and I wanted lots of players to join in. What I didn't want was another 16 player death match on a tiny roof top map with all the stuff I did want happening in the Skybox. That genre is already well covered.
I also wanted better sound, FarCry had wonderful chunk sounding guns, Crysis had distinct weapons sounds, customisation and great enviromentals. This was running around with an angry stapler, another thing well covered.
I'll rent Crysis 2 to give Crytek benefit of the doubt, but the demo gives the impression they've dropped into the same check list deevelopment that everyone else already does. On the 360 the graphics don't particularly hold up and it all feels a bit of wasted opportunity.
But we'll see in due time.