B Alone

Spoiler: Trick List

- low ceiling (B acts strangely with a low ceiling and may travel over stairs that B can't normally do)
- quick slide (slide the slider quickly will reposition B)
- soft stairs side step (with B at the bottom of the stairs on the slider, drag slider under the stairs and tap to the side before B goes all the way up the stairs)
- wedge zapper walker (with B in the center of the wedge [not too high], tap a zapper)
- stairs side step (with B on the stairs, tap behind B and then to the side)
- springboard stairs (with B on the stairs, tap behind B and then in front of B)
- auto pilot (tap and move slider to redirect B)

Spoiler: Video Solution

An easy one from yours

...
abit confusing at the junction
near 2 collapsed balls.
there is tiny hidden slider to bring
B go to backside.

also clever use of hidden stair
to prevent B doing SBS shortcut
to go to grass block.

@Ray Aznable - You must have played the wrong level as there is nothing hidden in this level.

Liked the wedges and zappers. Surprised by how many moves I performed differently from video.

Very Satisfying Level
Because i like B only levels with some hard difficulty

Quick & fun B alone tricky level. Thanks @Meko Guy