Until you go through the quest explaining it, killing a warden won't clear your notoriety. Another one can spawn as soon as you kill it, or the one you just killed may resurrect at full power and swat you down the street.
I fought these just as I was starting The Escape, so when I got tired of wasting my ammo on wardens, I went for the door. The warden followed and just as I was about to step through the gateway, the warden interrupted with a swat. After killing him (again!) I was unable to resume the animation where it left off.
Well, that early in an early mission, it shouldn't be any problem to restart the quest, right? I did that, and lost the 3k cache I had just collected, and the credit for all those warden kills.
I fought these just as I was starting The Escape, so when I got tired of wasting my ammo on wardens, I went for the door. The warden followed and just as I was about to step through the gateway, the warden interrupted with a swat. After killing him (again!) I was unable to resume the animation where it left off.
Well, that early in an early mission, it shouldn't be any problem to restart the quest, right? I did that, and lost the 3k cache I had just collected, and the credit for all those warden kills.