I'm trying to unlock the Venator armor set to help complete my armor collection, but I've had very little success with achieving successful assassinations. I've been told that playing SWAT is a good way to get them since the No Motion Sensor handicap prevents the enemy from seeing me wait for them to pass by, but I haven't even passed the Novice level of the Assassination commendation. What maps might be good to try this on? And are there other game types that SWAT that would prove fruitful?