If you are develping in 3D you should try using Adobe Director, its shockwave player has very good 3d support, chek out www.shockwave.com to see examples
The code for the tank has potential, you could make a good game out of it, defend the city, a controlable plane, lots of enemy tanks, make the tanks alot easier to kill and you could be onto something.
to get the survivor badge :- just die and you get it.
to get the sniper badge :- if you die and click retry your score still adds up so its easy just takes time
add minesweepers, and mine layers, v.good but annoying wen your men are climbing out of the last trench and surrender a fraction of a second before you win(happend to me just now) lol, very good game