I was just running around in one of the free roam missions killing some dudes when suddenly a loving spider tank pops out of the sky.
so I start fighting it, im only level 4 and this giant ass tank is trying to shred me to bits, and then suddenly 3 other level 4's show up and were all trying to fight it.
I Threw a grenade that seems to be like an emp at the thing and just go and start shooting at its legs with a shotgun.
we didn't kill the boss before it ran, but we got it to nearly a quarter dead.
This game is loving awesome.