I have no idea how I did that mission. I just listened to the first conversation, killed the manager inside that room. All hell broke loose. I just shot as many people as I can. Saw one of the managers was getting away (somehow killed the other one, don't know how) and then somehow managed to escape the club and chase and kill the last one. Seriously, I totally fluked that mission and I'm guessing I didn't do it properly at all.
I'm guessing you kill the first manager in the room quickly using a knife/bat so you don't alert everyone else.
I'm guessing you kill the first manager in the room quickly using a knife/bat so you don't alert everyone else.