"Get in, get the money, and get out." That's the way it's supposed to go during a bank robbery (or so I'm told). Unfortunately for the team at Overkill, things get a little messy.
The video below gives a good taste of each of the four classes: Ghost, Technician, Mastermind, and Enforcer. The walkthrough also demonstrates how civilians and security guards will react to armed thugs storming the bank.
[Source: PlayStation Blog]