Crysis 2 only DX9 - DX11 will be "later" with an update

[Pontos]

2) FSAA, where is the FSAA option I like 2XFSAA @ 1920*1200 (more if my GTX295 can handle it).

Crysis2Demo.exe +r_FSAA=2

The demo completely left customization out of the ingame menu, so you have to deal with these as launch parameters.

Other interesting parameters: +i_mouse_accel=0 +i_mouse_smooth=0