Crash Bandicoot 2: Cortex Strikes Back/Bear It

In this level you will ride a polar bear through a snowy course, at great speed. You cannot stop or go back. You will have to avoid many obstacles such as gaps, snowmen, orcas leaping out of the water and the dangerous Nitro boxes. You can also slide on ice. To break the boxes it is enough to touch them. Only at the end, you will automatically get off the bear and before the final room you will find the detonator to blow up all the Nitro boxes. Since you can never stop, there is no bonus round in this level.

Getting the gem
There are no hidden boxes or secret areas, to get the gem in the final room you simply need to break all the boxes along the way by tapping them while riding the bear. It's not always easy, especially just before the finish line there are some boxes arranged in a zig-zag that make it difficult to reach them all. Since you can't go back, if you miss any boxes you are forced to sacrifice a life in order to restart the level from the last box C, or you have to start the level from the beginning.