It isn't obvious if you don't read the
description hard enough but you have 3 passes,
whereas you can skip a level if it is too
hard.
You don't get points for
skipping, but to skip press the letter P either on
the description of the level or on the level to
skip.
If you complete hardboiled,
each skip you don't use is worth 100 points
each.
Try to be quick, because each second
you keep at the end is also worth 5 points each.