Void Express

Drive an armoured locomotive down a long rail loop through six dead dimensions while a dead engine on eight legs walks the same line behind you. The boiler feeds the wheels or the gun, never both: run DRIVE from behind the locomotive to open the gap, or swap to AIM in the cockpit to crew the turret while the Weaver closes. Salvage the Void, upgrade the train, and remember that it runs home to its web-choked lair the instant you hurt it.