and there are not cherries. If you start at the top and go to the bottom - you will die if you are more than one second late. That's how fast you have to go. I have made it two times without dying, but you need to be lucky with the cherries and the screen freezes when the 'trap' goes down so sometimes you run into the wall instead of going down (therefore you die).

. The levels are hard enough for normal mode and I think you should unblock the N64 before start going there on Nightmare mode.
