This is going to be a grind, no question about it. First I’d recommend working towards your other Wrecking Crew Achievements, as this will shorten the grind a little.
Now, the set up I’d recommend you use isnas follows.
Game Mode: Total Chaos
Weapon: Thermobaric Rocket
Building Collapse: High. Very important. The reason being is obvious, but I’ll state it anyway. You get way more points setting to high. Instead of around 100,000 on Low, it’s around 300,000 in High.
Now, this map has a large bridge and that’s it. The reason for choosing this map is the quick return of over 300,000 per run if you’re efficient. Using the weapon above will allow you to blow up the support struts underneath it. Only blow them up, as when the flat sections collapse you will get more points by allowing them to crumble
Naturally you may want to pick a weapon that suits you, but Thermobaric Rockets are a good choice. The jetpack allows you to manoeuvre around the debris quicker than on foot. With 5 rounds it cuts down on loading times. If there is any suggestions to improve the guide let me know.