Ok here are my problems with MW2 - yeah there basically all multiplayer, after all I enjoyed the story for what it was and seeing the EMP in game form for the first time was actually pretty fun too.
1: Since when was the knife a damn Halo rip-off of the Energy Sword(laser sword, whatever)? I honestly have seen some of the most annoying crap in the game with it for instance I pilled bullets from my shotguns, P-90's, ACR's etc. and some ass hat just sprints close enough to me and then teleports through my now knifed corpse, because of some ass hat dash move that I've only ever seen from the Halo's energy sword.
2: Hit detection - yeah I'm moaning about hit detection, I've watched the kill cam a dozen times all in one day to see the most annoying possibilities for instance this morning, I pilled bullets into a man's head - with Red Dot sights and the cross hair doing that annoying little thing it does to give notice that your hitting someone and then I die - WTF?! the kill cam shows... only one of my shots doing any damage while the rest do nothing...
Another example would be the time I launched a locked-on Stinger missile at a helicopter, the rocket fires and a second later the rocket is gone, as if nothing happened - except the helicopter sees me and I turn into swiss cheese...
3: The overpowered Akimbo, or should I say underpowered in the P90's case.
In all points I've heard that the P90 is supposed to be a really effective weapon in close range combat at 100% accuracy I should be able to kill a lot of things no problem, nope I can barely kill a guy before I'm either out of ammo or being killed myself.
Then you have the Akimbo for the Model 1887(sp) this kills everything and everyone with a simple shot - this is essentially bull shit...
If I recieve flak for this - then all the funnier, but those are my points.