Maximizing Score

When attempting to maximize score, there are some very easy multipliers available for anyone who knows of them. These are the ones that are not so self explanatory, but will still help immensely in raising your score.

Basic Multipliers

Incognito-300
Never enter high profile throughout the chase. You'll want to focus on not going on rooftops, and sprinting only when far away from your target.

Hidden-200
Kill an enemy from a hiding spot. It may be important to note that blending areas count as hiding spots. Do whatever you can to get close to the target, then just jump in with a crowd and kill him as he passes.

Focus-150
When looking at your target, let the white bar fill up before the kill. It takes about 2 seconds to fill, then go in for the kill. Just blend in, disguise, do whatever you can to avoid being seen then proceed to stab your target.

Acrobat-200
Get a kill after jumping off a wall. Good when you want to avoid wasting time going for incognito, running on rooftops followed by an air assassination will guarantee you this.

Team Multipliers

Co-op kill-100
Lock on to a target, then have a teammate kill said target. This is hard to plan on getting, but my advice would be to lock on to everyone you see. This way, if a teammate gets a kill there's a chance it was the person you had locked on to.

Co-op stun-100
Lock on to a target, then have a teammate stun said target. Similar to Co-op kill only with stunning in it's place.

Diversion-150
Kill a target your teammate was chasing. When you see your teammate chasing someone, don't refrain from using your hidden gun or another method to kill the target being chased. Guarantee getting this one by stealing kills, more or less.

Other Bonuses

Escape-100
Run from an opponent after entering open chase. Getting in a hiding spot or blending with a crowd speeds up the process.

Distraction-100
Have the person chasing you attempt to kill you, but kill someone else with the same persona/clothing.

Untouchable-1000
Don't die in an entire match. The only way you'll ever get this is by camping for the entire round, and standing next to a "clone" of yours. I'd recommend picking up disguise and morph to hold you out.