Best friend - Hidden win

Stuck at the end...

Spoiler

Or I die by a hidden zap, or I am stuck in the lower floor with B and R trying to get into a small corridor.

@chemi

Spoiler

"R not have to go to the downstairs hall. in the downstairs hall there is a hidden win. try using draggable box"]

No way... it is a pity because I think with the visible win it was already a great level.

@chemi

Spoiler

"try B in the hallway most small, point to Red brick, but the previous pull draggable box behind."]

I agree with @chemi. when it has a hidden win,it becomes a bad level.i have made B and R to first floor under the motor,but didn't find the hidden win.

OK.finally find the hidden win.you do not need R at all.using the tripping on air bug,B enough.

Spoiler: Hint

the hidden win is above the red brick which under the motor.

@Mike_CN Thanks.. But why do not need R? R became best friends because R will remove all zapper.

@Muslim Arizzy As i said above,i can made B to the hidden win by using bugs.i don't need R.and all zapper do not need remove.

@Mike_CN thanks for the advice. but I make this level not to pass the bug. so I need R

@Muslim Arizzy anyway,it's a nice level.but it's hard to find the hidden inverse win.

It is a great level without the need of the hidden win, it has: logic, ability and story. I would say perfect level if you finish it with the visible win.

Anyway, this is just my opinion... don't misunderstand me, ok? I really like your levels.

@chemi thank you very much

The level was fun, great stuff in small space, just one thing was a bit of displease , the way to hidden win should have been more defined rather than being a large compartment.

@Rohan Kumar thanks.. Ok I'll try and learn from your suggestions..

Finally solved. Really nice level. I rate it with five stars although I didn't like the end.
Thanks!