Version 1.7 of the tweaker program is out. He added more options.
I just beat the SP campaign and I'm actually pretty satisfied with the "ending" of it. You can tell that they're going to continue the story and it's turning out to be one hell of a sci-fi/action pc game. Technical "shortcomings" aside, I'd say it's worth $50 of the $60 cost because I can forgive certain things if the story is well-written and presented. Voice acting ain't half bad, either.
The AI is a bit easy to get around on "normal" difficulty, however. The final fight in the game against *SPOILER* the 4 cloaked hunters was super easy as all I had to do was hide in the pipe that I entered the area from and snipe their heads off. You'd think that for elite soldiers who follow you around during the entire game, they'd figure out to attack you when you have a limited range of movement, instead of standing around in an open area. Hell, even the regular shock troopers were programmed to fire off their personal short-range EMP blasts while roaming around a piece of land.
However, there is ONE major knock against this game. In Crysis1 you could pick up a chicken, go max-strength mode and punch said chicken miles into the ocean. MILES. In this game, there is no max-strength mode and there certainly aren't any chickens. Any game that lacks that level of chicken punching is... well, it leaves an empty spot in my heart.