Shepperd is even more of a badass, or a boyscout than ever before. Get ready to get Large and Incharge :-D
Changes include a more simple upgrade system without the ability to get charm or intimidate points, instead you have to earn your skills in charming and intimidating through your choices and actions, so the higher a paragon meter, the more charm options you get, and the same goes for the renegade meter.
Changes to the gameplay has improved the combat-system ten fold, so now it feels like an actual shooter, and with some new and vastly improved biotic and tech powers, the fighting is sure to keep you entertained for a long time.
The characters have become even more vivid than in the first game, and they will present you with many surprises and personal missions for each of them. This will unlock a bit of a background story and insight into your characters personality, and at the same time you will see some of them undergo some gradual changes.
You will be able to get plenty of DLC for this game, that brings some new characters to the rooster, and a personal mission for an old friend.
All this and more makes Mass Effect 2 one of this years most exiting games that most Action and RPG fans will loved to death.