I used to be quite adept at the Assassins' Creed multiplayer, specifically Assassinate Mode. Few games are as thrilling as that was. No set target or pursuer, just a vague idea where everyone is. Stalking through the crowds, hunting you. Hunted by you.
Keep moving or wait in one spot, both have risks. Rooftops are ill-advised unless you're the only one using the them. Loitering in a group of 2 or 3 identical npcs different from you is best. A genius misdirection and the perfect trap. Few ever think it's the odd man out! When they wise up to it, do the reverse.
The first minute of the game is the quietest when you wait in a corner. Everyone is consumed by killing those closet to them. You're to far away, so they ignore you for now. Eventually somebody gets curious. The radar lights up as someone comes into view. You make them immediately. They're sloppy, giving themselves away. Maybe overconfident because you're isolated, an easy kill with no competition. No secondary threat. They're closing in. Do you target them now, or wait a little longer?
I'd always wait. Let them get close. A lot can be learned by observing your prey. Sometimes they are followed. Pounce too soon, lose sight of all the other hunters, and be cut down before you can react. Better to let the first lamb fall to the second and him to the third. When the victor stops to revel in the slaughter, I step out from the crowd and drive my blade through their spine! I then disappear into the mob and wait for his return. They'll seek revenge if they can get it.
Playing a corner of the map was the best way to go a game of Assassinate unkilled and sometimes unmarked. I didn't always walk away with the most kills, but I almost never died.
It was possible to do the same in the center of the map and get more kills, though riskier. Being heavily trafficked by other players, one wrong move will reveal your presence to everyone! You could, if careful with your movements, vanish in their radars due to how close everyone is. You could be right behind someone and nobody would know.
I also found that players became impatient, yet overcautious and flighty in the map's center. Be too quick to mark a target, they may see you coming and run. Often they'd just get cut down by someone else. I learned to use this to my advantage.
Whenever I was marked, I'd never react. I wouldn't even target them back, it tells them they were right to target me. Most times my opponent would believe me to be another npc and they'd go for the character next to me. They kill the wrong guy and I strike before he knew what hit him! If that didn't work, I'd always fall back on an ability like the bodyguard or smokebomb. Once my pursuer got close, I trigger my ability and while he's stunned I'd kill him in return!
Good times.
I was also pretty godly at the Multiplayer for The Last Of US. You'd be surprised at the damage you could do with just a shiv, a silenced pistol, and a single Molotov cocktail.