From the Steam Store page:
Monaco: What's Yours Is Mine is a single player or co-op heist game. Assemble a crack team of thieves, case the joint, and pull off the perfect heist.

The Locksmith: Blue-collar infiltration expert
The Lookout: She can see and hear everything... a natural leader
The Pickpocket: A hobo with a monkey and a penchant for crime
The Cleaner: A silent psychopath... Jack The Ripper in pink
The Mole: Big and dumb... likes to tunnel
The Gentleman: He doesn't always wear a disguise, but when he does, he looks fantastic
The Hacker: Armies of viruses shut down security... a modern day warlock
The Redhead: Manipulative and murderous... a lady always gets what she wants
Play with up to four people online or on the same screen. Compete with others via daily leaderboards. Find out why it won the 2010 IGF and has been described by PCGamer as "one of the best co-op games of all time."