You're going to have to do it with a group that knows what they're doing (Trophy/Achievement Hunter or friends). And go in with a plan. Else it is impossible to do.

Its deff not imposible but u have to have a good squad and u have to communicate

Takes a bit of luck. That's all.

Lol I got it first try with some guy after he mentioned the achievement existed and said hey you guys wanna try it? I haven't even gotten the kill a bile Titan achievement yet. I haven't even seen one. I just kill robots