Okay, I just made up that level title on the spot, but level 5 really is a 3D spiral of platforms. Not quite Escher level of complicated, but people say they are having troubles with this one. First, some clues:
1) Look at the shadows to see where the deer will land.
2) You can move the deers in mid-air.
3) Walk against the pyramid to stay in place while the others move.
4) Try to merge 32 and 64 first, and not 128 and 64.
If this is not enough, here's a video walkthrough.