BIA: Hell's Highway 'Realism' trailerSuccessfully complete the indicated level to unlock the corresponding bonus:
Lightning Tower: Successfully complete the Special 3 stage on the Hard difficulty.
Remote Mines: Successfully complete the Special 2 stage on the Normal difficulty. Press Square to place a mine at a cost of five Gems.
Run Ability: Successfully complete the Special 1 stage on the Easy difficulty.

So you have to save everyone or you don't get a rainbow for that level? That makes it a little difficult ya know?
Is doing that the only way to unlock those items? And if so, once we unlock them, can we use that skill in any level?
Ain't Cheats
someone needs to explain to psu what cheats are lol