Gaah! I can get past the first R, but not the zapper bot. And the 2nd R won't let me use his horizontal slider! Help!
@trids - Thinking it through logically... Spoiler: Hint 1 This level contains nothing which you haven't already seen in action. Spoiler: Hint 2 There's got to be a way to get to one of the critical sliders. And now, if those weren't enough... Spoiler: Hint 3 What's the closest you can get to a slider, even if it seems out of reach? Spoiler: Hint 4 Is there anything which might make you take that last critical, yet seemingly impossible step closer to victory? Spoiler: Hint 5 You've already played through some levels where there was hidden hanky-panky even when the level looked very open. You've even built an example of how some such hanky-panky would work.
Ok, I'm guessing there must be a hidden elevator under the big platform? I just can't find it - or am I chasing a wild goose? Cos I'm at the point of taking a spanner to that lower R bot for refusing to let me past him!
No hidden elevator. Spoiler Instead, a mechanism like limited access, but making B move off the steps onto a draggable. I suspect it's too unintuitive.