zoom is really needed. although, granted, once you get so big you dont fit underground all you need to do is run forwards and pretty much everything dies(assuming you got spikes)
there's a bug where you cant take a unit off of the roster(i mean on the bottom menu) - once the bug happens, one unit will always have to claim to be on the roster even when you have 4 units ACTUALLY there.
you know you're hardcore when first you shoot one nuke mid air then bash the other with your tires, then on the bridge you go on your back wheel and take out the final nuke with your spikes.