Well, I had the idea of a heavilly guarded tank, here's the image:
1
Bullets.
2
Lights, in the dark they will come in handy! Also, if they enemy shoots them they go out and the light energy gets weaker (the right light).
3
Wheels, If the wheels get shot they pop and the tank leans to the side of the popped wheel.
4
Ladders
5
Windows, these should not be controled by a player but by an NPC, where they just shoot randomly.
6
Drivers seat + Guns, Where the controler of the tank sits and he or she can shoot as well.
7
Reclining Gun (spelling), These guns can shoot at an angle, so they can shoot North and North West if the gun is placed on the left side of the tank.
Note:
I got bored so I decided to have fun with my ideas!