On the Crash and Burn level there is an easier way to get the red gem on the death route. After you pass all the nitro boxes and lava you will get to the part where you can see the red gem from across a gorge. Hit the gem with your bazooka and you get the gem. Then die and it will take you back to the last check point and finish the game from there. You will finish with the red gem. This way you don't have to cross the gorge with the long jump: slide, double jump and spin.