2684 meter... there are long stretches with no obstacles seemingly just random so luck is a factor. Could've used a sound budget (like getting relevant sound instead of just recorded voice).
Have to agree, the pointless grinding of 20+ jumps for one item makes the game much less rewarding to play. instead of spending an hour doing 20 jumps getting thing I tend to to 3-4 jumps per week or so.
To squint: you can move a manipulator that from one safe spot to another (e.g. between solid ground and a holding beam or between two holding beam.) Also, when you move someting so the beam is obscured, the item you hold is moved before it is relase. For level four, just do the only thing possible and it will unravel itsel.