This is level 57 of the Main tunnel.
You need to walk on the level in a spiral shape, which can't be done by fast-paced characters (such as Skater). Use the Runner and try to jump repeatedly to slow down your momentum, so you can run more slowly, thus resulting in better turns.
Same thing with the Lizard, but be careful since Lizard jumps really high, and this can make your plan go off the rails.
The crumbling tiles are all over the edge of the normal tiles and are connected, so they serve as a kind of last-protection to you, so they aren't a threat.