That's because you played the demo, the full game has pretty much all you mentionned.
Dulix... use the jets as much as possible... are you a jet who**e? XD
I can use them effectively! Gun down tanks! :D Using a head set whilst playing makes it so much easier!
Try camping, or get a jet, and crash it into people.
Strap C4 on a jet.
Ehhh, i just hide behind trees that i think fits my costume well...
Also, don't you just love the driving mechanics of the game? It's so uber <3
Jets are pretty fun I must addmit but, really, unless a good player is behind the controls, it is totally useless. Try placing heaps of C4 on a jeep, driving it into a tank and jemp out, let it roll a bit more and boom! Love that tactic!