The Stealth class is the third unlockable class in the game. The Stealth class has access to the more powerful primary suppressed weapons rather than just the secondary suppressed weapons other classes have available. The stealth class is an excellent class for large maps especially with hostages.
The weapons available include most of the same weapons as the Assaulter class but in a suppressed version. Each suppressed weapon has some stat differences to the unsuppressed version which the Assaulter has.