Not true! Enough flame damage will crisp them and slow them down. The Mac-10 is also very effective for fast headshots against the husk.
The firebug is also immune to their rocket blasts at level 5 and higher. Send the firebug in to block the blasts and MAc-10 the husk in the head. It is a very effective strategy.
We need to just get a group of us on at once and work as a team. I will be the medic, you can be firebug, Kama sharpshooter, snakespy demo, and two spots for a berserker and support.
Xbox gamertag: oWastelander
Laptop: ASUS ROG Strix G15 AMD Advantage Ryzen 9 5980HX Radeon RX6800M
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Xbox Series X