I suspect the original writer of the sentence is using scale in the following way:
Scale (with object): Climb up or over (something high and steep). – Oxford Dictionaries (link below)
If we replaced jumps with mountains, the sentence would read perfectly fine:
In the game some of the mountains will take several re-runs to scale.
But here we have:
In the game some of the jumps will take several re-runs to scale.
where instead of mountains we have jumps (think ski-jumps).
However, it appears that the author may have taken liberties with the word somewhat if the required action was to jump towards something (high) rather than to climb.
The examples given in the Oxford Dictionaries had to do with:
scaling fences, mountains, slopes, ladders, hills, heights, inclines, roofs, ledges, roofs, walls, stairs and the like.
That is, all the objects required physically climbing them rather than jumping.
- Oxford Dictionaries link here – scroll down a little and see "Verb" [with object], Definition 1.