Kill It With Fire Achievement

[Rammy-P-]

Not sure if this is a Steam Achievement or not where you kill 100 bugs with fire but it doesn't appear to be working. I sat inside several bug hives going through several canisters and resupplies for the full match time and never reached the goal. Any thoughts?

[Abhia1majin]

that's odd, I did a trivial mission solo and was able to get the achievement no problem, but at the time I was trying to fulfill the requirements for the personal order using the flamethrower....that might have helped me identify killing 100, maybe its bugged?

[LuKyno ツ]

You can do it easily solo on 4th or 5th difficulty on any Terminids planet.
Just use Flamethrower, fire granades and Eagle Napalm Airstrike strategem. For chargers and titans use Orbital Railcannon Strike to get rid of them faster.
Achievement should pop-up without any issues. Be patient.