How does one get the very first crystal? Tried for half an hour doing all kinds of double jumps and maximizing speed but I couldn't get high enough.
Here's how I did it (sorry for bad video quality):
you kind of have to jump until almost at the very edge of the ground, then maximize your first jump by holding the spacebar until you start to fall down/hit the pentagon boost thingy, and then maximize your second jump as normal.Took more than enough tries to get it right but at least it worked out in the end.