Interessting my frist impression was that it is some kind of missle vehicle. Maybe used in urban enviroments to defend harbor installations againsz naval assault. It seems intended to be able to "pop-up" and fire its ordonance over low terrain or even buildings.
I really like your style, how did the EVE contest go?
The design is somewhat original. It's a cross of eight wheeled vehicles with spider tanks as I call them. The design here is very useful in rough terrain or those piles of rubble in urban combat. The machine has a rather impressive look to it. Hate to be on the wrong side of those pods. As the turret, I'm gonna say a 25mm chain gun.
Thanks. Really, it's a sort of visual exercise to take a standard and very mech-ish trope like a spider tank and see if you maintain the essence while putting it in a different context. As far as the caliber goes, I could probably justify either 25 or 37mm once the barbette is shrunk down to something less RTSish.
I apologize- I should have stated in the description that targets can only be engaged with the gun when the missile tubes are lowered. The drawing is a bit unrealistic in that way. (Likewise, the gun needs to be traversed to the rear when firing missiles to prevent damage to the gun and mount.)