I actually found the problem. I had for some reason the thrust-forward on at all time, so every time I got on a helicopter it crashed with a building.

I turned it off and it feels just like battlefield all over again. I even did a flip-flop in mid air.

After a while I just took the bumble-bee and started crushing the strogg with it. Watch out below here comes the Giant Turtle Shoe!

of course this was only in easy that I was able to pull it off since in medium or hard cause an obliterator canon to back of the helicopter would take me out even before I could see them dang strogg.
