I had a monster headache that lasted the whole of Sunday because I had a marathon on this game - it's been a while since I've done that, but I've never had that happen because of that though... :lol
I beat the Campaign on Veteran right from the start and got every single player Achievement yesterday - now, shooters are my number one thing, and I've beaten every shooter I own, especially the big titles on their hardest difficulty, but I gotta say that Veteran, should not be called Veteran - it should be called "Inhuman", or "Cheats On", or "One Man Army" because the instant you stick out anywhere, you are going to get pelted by anyone directly in front of you no matter how far they are, flanked by a seemingly-instant spawned enemy even though you checked your six just a second ago, and have your squad who are all in front of you get ignored and focus directly on you...
It's very, very doable if you have skills, no doubt, but it's yet another game that makes me appreciate Halo's A.I. - the enemies on Veteran don't feel real, they feel like robots with auto-aim unlike Halo's A.I. which still feels natural and react to what you do, to the point of even retreating...
Story-wise it was very, very entertaining - I got slightly spoiled about the "big scene" on GAF thanks to some moron, but even when I saw it, I wasn't shocked - but that's how I am, I'm not sensitive to these kind of things at all in games - other friends of mine that saw it definitely were though...
The things that go down were done in a entertaining way, makes me feel like I was watching a blockbuster movie - they really nailed it in that sense and went above anything I could expect from them - kudos to IW for this, and the huge range of areas you visit in the Campaign was well appreciated...
Multiplayer is a fucking blast - I love that I'm thinking about how to come up with a few ideal setups, and which perks to level up as well as which gun to level up as well - love it, love it...
Spec Ops is a blast as well, I'm more than half-way done, all on Veteran, and some have been pretty challenging thus far too, and I'm curious to see how the last few pan out...
All in all, I'd say that the game is a winner in my book, all of my friends, including some I haven't played with in a while are all over it, and we're all teaming up for MP practically every night for it...
...but ooooooooh man did I forget how much of a camp-fest COD is - none of the other big shooters that I mainly play have it so prominently, and people were sure to remind me in this game about 2 nights ago in one match... :lol