Lost Exit Quest (final)

Had to upload a readable image, because of an invalid image the previous level was deleted. Thanks @nGord for kind explanation and managing the customization with MekoStudio in advance!

Just because I had posted in the previous version:

Spoiler: Hints on the way around the walls

1) One ball is hidden beneath the stairway and pushes the gate a little outside the wall. A draggable is also unlocked now.

2) Another ball requires help by R-Bot which fell asleep in the basement and woke up hearing the gate being moved. First he must pass the dangerous wall-walk...

3) Second ball dropped unlocks a draggable again. B-Bot needs to pass the big hall without getting too claustrophobic running under the moving machines.

Disappointing news: my iPad cannot read the QR code.

@Axelay - I gave this level a try yesterday and gave up even after your new hint. B did drop the ball even though I had not seen it and I did find another hidden draggable (slider) but after many attempts to get R past the outside route, all ending with R falling off, I had enough as having to restart and repeat over and over got tiring very quickly. B did get inside the hidden area and when B fell and landed some where below, I have enough. As I said yesterday, levels can be hard enough with NOTHING hidden.

@nGord Thank you very much. This QR code works well.

@nGord Thanks a lot again, great work!

@gmacpro Thanks for giving it a try unless it is designed as hard to solve, and can be frustrating. My goal was to craft a challenging trial that needs to be survived

Spoiler

...and it ends with a little surprise, when the lost exit will be revealed after surviving the course.

@Axelay - I got a feeling not too many are going to see the surprise...

No one ever made it to the finish? Really?!
Should I add hints for a walkthrough?
Maybe I find time for recording a solution video in the near future (truly hoped, someone had done it in between)...

I’m the one who beat this level. In a different way.