You play as a guy named Bob. You are a stealth killer. Your every task is stealth, but one day you help your boss and he promotes you to Killer. In part 1 there will be stealth missions. Part 2 will have different missions. In part 3 you will take revenge, you yourself will find out for what.
Judge not strictly my friend did, he is new to DYOM, his nickname is Artem09900. He did not fill in from his profile because I came up with everything, and he arranged everything, etc.