Successors of the Tenebras:http://www.brikwars.com/forums/viewtopic.php?f=17&t=5715
The Armarria, or living hovertanks. As you can see, they have one giant cannon for shooting big stuff, and two smaller guns on the side of the turret for things like minifigs.
The Erraldoiak. A giant mech-thing that can stomp, whack, shoot, or eat its enemies. The things on the tops are double-barrel pod guns.
Nom nom! You probably can't see it, but the Erraldoiak has a proboscis that it uses to drain the life out of minifigs.
Rear view. Here you can see the power conduits to the pod guns.
Example of the arms being used. They can also be used to help the Erraldoiak get up if it falls over (avoiding the AT-AT's main flaw).
The Deabruarekin. About twice as tall as a minifig, these fearsome creatures have shoulder mounted cannons, letting them destroy you from near or afar.
Stab stab stab! You can see the shoulders clearly in this pic. They're an improvement over my old design.