Stack it taller, wall it thicker, walk it heavier. Hull, armor, legs, turrets — your fortress, your way. Size is the flex.
Bolt on more guns than anyone alive. Out-gun the field or get out-gunned. Bring everything.
Nobody fortresses up forever. The apex base is the one everyone hunts. The fight never settles.
Your walking fortress keeps marching while you're offline — alive, exposed, yours to defend. Lose it and it's gone.