20. Less quick scopers
21. New Zombies : carrying on with the WAW story
22. Marathon lightweight commando is in the game: but commando is a gun this time

23. More variety in sub machineguns and assault rifles
24. No stopping power or juggernaut
25. No painkiller,matyrdom, or final stand
26. Scavenger doesn't replenish n00tubes,equipment, or explosive ammo
27. Customization to the extreme: facepaint, red dot/reflex/infrared sights/gun camo/first perk changes look of character, clan tag on gun, and the ability to create your own emblem in the ingame editor
28. Interactive environments: locking doors by pushing buttons, rocket launching on launch
29. Theatre mode: new to cod, allows people without pvrs to record gameplay
30. In game friends list: new to cod, sounds similar to halo reach, where you can see friends and recent players, able to check their fileshares and invite them to games without pressing the guide button/ps button
31. In depth stats: for the kd whores, and people with attention to detail
32. Splitscreen online: with up to two players, and both can sign in to their psn/xbox live accounts