Introduction[]
This is Level 57 of the Main Tunnel in Run 3.
Suggested Characters: 
Gameplay[]
This level is a snake, but with a twist. Half of it is made out of crumbling tiles! The snake part immediately calls for a character with great maneuverability, or jumps very far. Either way, the character selection is quite open, and most characters will work.
The Lizard and Runner have similar functions, except the Lizard is capable of hitting the wall 120°, two walls up, mid-jump to stop it from overshooting. Avoid crumbling tiles at all costs apart from falling, and the Runner is also capable of skipping some of the snake.
The Child works well because he can't break crumbling tiles just by stepping on it, if you avoid jumping off of crumbling tiles unless you are about to fall off, this level will be much easier to beat.
Overall, this level isn't too hard with the right characters, so if you become stuck, try another character or direction, and the level shouldn't prove much of a problem.
Walkthrough[]
Level 57 Walkthrough (Run 3)