I'm stuck, don't know which level to do

[pijankengur]

So I'm not too far in, went into the red portal from original area, to the right of that is the blue portal that has all the christmas levels. I've done all of them. And instead of going to that right blue portal, I've gone up and left and done the remaining levels when you enter the red portal for the first time.

Problem is I can't figure out which level to do now. They all seem to be beyond my reach. Like there's a cliff between me and all the remaining ones I can see.

is there a way I'm supposed to jump the gap somehow? In the level selector...