There are two 3D wallrun modes in Sonic Lost World:
- Climb Up (the one you use if you miss a jump; simply run and jump directly into a wall)
- Run Sideways (the one that I'll talk about here)



 -- Here's how to run sideways into a wall --
Face yourself parallel to a wall. Press and hold the run button.
Now, while keeping the run button held down, run mostly forwards parallel to the wall and slightly towards the wall.
Jump into it, if you want to start the wallrun a bit higher up. 



 -- Process of sideways wallrunning --
In this state, Sonic will automatically run forwards on the wall as long as you keep that run button held down.
Do not let go of the run button unless you want Sonic's speed and height to decrease dramatically.

If you notice Sonic dangerously losing too much height from a wallrun,
use the spindash by tapping the spindash button.
You can only use this once while being attached to a wall.

If you still are in danger from losing too much height afterwards,
try jumping off the wall and catching a parallel one.
Hold the analog stick into the direction you want Sonic to jump off to (left or right) and press the jump button.

If done correctly, Sonic will jump off in a seethrough ballform with some speed.
(If done wrong, Sonic will jump with a solid jumpball on the spot and you'll fall. Keep the analog stick into the opposite direction! If Sonic runs on the right side, hold left. Left side, hold right.)

Once Sonic meets the parallel wall, he'll continue wallrunning on that and gain some height.
You can use your spindash again that way too. Keep doing this until you reach your destination!
Wallrun, wait, spindash, wait, jump off! Wallrun, wait, spindash, wait, jump off!
You'll get the hang of it soon enough!!

If this process is too complicated, just ignore the spindash bit.
Wallrun, wait, jump off! Wallrun, wait, jump off! That will work too.



 -- Pro Tips --
-You can try doublejumping back into the same wall you just jumped off from.
Be careful not to overdo it abd don't hold the analog stick into the wrong direction.

-If you time it right, you can gain some serious speed by spindashing and then immediately jumping off to a parallel wall.
Then, you can keep that speed by juggling Sonic between the walls a few times. 