Stealth

Getting to your victim can be a laborious task. More often than not, they suspect someone like your self might come calling. After all, contracts are rarely taken out on completely innocent civilians.
Sneak up on victims from behind and take them out using a variety of tools, such as garrottes and silenced firearms. Employ stealth and meticulous timing to circumvent patrolling guards and other pesky security precautions taken by your "mark". If too noisy and careless, you might end up staring down the business end of a sub-machinegun. And there is nothing more embarrassing than not being able to fulfil your contractual duties.