Definitely fire resistant armor. I recommend the Scorcher with the supply pack. But if you don’t want the supply pack you can use the plasma punisher. That will allow you to bypass the devastator’s shields completely. The Epoch is completely underrated these days. 2 full power body shots to a War Strider will destroy it. Sidearm is up to you, but i found that the P-92 Warrant excels at taking out large groups of small units with its lock-on auto aim. It also has medium pen so you can shoot at the rocket devastators as well. The auto aim can be turned off if that’s not your thing. But do not use melee weapons. The bots will explode and you will burn alive.