


On the other hand, if you like playing as an Engineer but want to be more involved in offensive maneuvers then the Sentinel class would be a better fit.

In Mass Effect 3 for the PC, PS3, and Xbox 360, unlocking characters to use in multiplayer is all based on a CCG system (collectible card game) where you play to earn coins (or pay real money to get them quicker), and use those coins to buy card packs with different levels of rarity of cards.
