This game looks weird, i can't play , my eyes hurt, first the FOV is totally wrong, then there's this stupid motion blur and everything looks like my eyes are going to die. I didn't even finish the first mission.

For field of view (fov)

Press ~

Then type cl_fov 75 and hit enter. You're welcome
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As for motion blur, either deal with it, or make an autoexec.cfg file and go look up the Crysis 2 commands for disabling motion blur.

how about a the alternate anti aliasing , or how it's called, it makes background textures dizzy , they're all kind of moving when i turn

Try
http://www.fileplanet.com/219312/210000/fileinfo/Crysis-2---Advanced-Graphics-Options-Utility

Turn off the motion blur, tweak other settings as you like. Should help with the dizzy doing