Bad ass idea

Thais a pretty cool idea, I like the second one the best.

 

Looks like you could make the first map out of a well stacked octagon shaped set of double boxes, then for those four pillars, bring out a few bridges, you might need the help of a second person to pull off those pillars. Once that's done, use double and single walls to start creating your second floor, you might be able to pull off those tunnel like areas with double open boxes, or if you're going for the slanted effect, use the double walls. The pillars will be the biggest challenge, but outside of that, it seems like a good build idea.

I like the idea of AR's and dual Pistols, seems pretty good to me, although you might consider using dual spikers, and dual pistols instead of an AR, maybe throw in dual maulers as well, make it a duel wielding game, and I think it will turn out pretty sick.

Oh, one other thing, you may want to drop a grav lift right in the center, just to tempt people.