User blog comment:JAlbor/Wikia at E3 2012/@comment-71.237.128.25-20120524030002/@comment-1192466-20120531200949

In Gameinformer's interactive preview, they pointed out that you can get killed easily as a rat and can't be a one man army, so I guess tactics and stealth really are important. At least until you can even the playing field.