Armored Core 6 | Defend the Old Spaceport (S-Rank / 11s kill)

This is the fastest way I've found to kill any NPC AC. It could be faster but Nightfall is very agile.
Post your fastest in the comments below!

[@makemoneyrelax]

how did you do it?

[@tenminutetech]

It's all about the chainsaw! Very strong in PVE if you can catch them in stagger.