Well,
Fire/explosions are not physical.
So some ways to deal with it. Either get some absurd amount of fuel source that can be used to blow it up. Or get lots of bottles of fuel to use as molotovs to burn it. Or, (if weapons are sturdy enough) ignite the weapons!!!!!

The swords would be capable of doing that and the crossbow bolts. If you happen to have incendiary bullets, or even cyrogenic bullets (freeze bullets) then yeah. However, I suggest molotovs and try to make it run away with the fire.