Shortcuts (level 4): 

When you see a big place of grass there are two 
shortcuts to the right. The first one you hit a
jump and go through a tunnel. The second one is 
farthest to the right. You go through a tunnel 
which starts to go up. You come out and hit the
top of a tunnel which is a jump. You will then 
go on the top of a building. You will now hit a
jump and land on a building. Follow the gray line
and you will fall off the building and go through
an alleyway made of brick.