If that strategy didnt work for you, just made a new one i thought i'd get owned on but it worked even better lol.

Lightweight mech lol, stupidly light.

first time i did it i got rankS in 40seconds ><

setup:

head: HD-HOLOFERNES
core: 03-AALIYAH/C
arms: AM-JUDITH
legs: SALAF-LEGS
fcs: LAURA
gen: LINSTANT/G

boosters: whatever

Left Arm Weap: LR02-ALTAIR
Right Arm Weap: LR02-ALTAIR
Back: nothing
Shoulder: ADDICT

auto stabalize, setup is easy to dodge them and kills each mech before it can get to you.