if its the crane your having trouble with i have the answer. when you get to the crane buy
the broken bridge jump down, exlore a little and you will see a bright yellow button push
it(circle) and the crane will move. Jump back up to the bridge(there should be a bunch of
ledges with green crosses on them, go up there and you will find the bridge. Walk to the
edge of the bridge and you will see a red x grapple on to it(R1+circle) and swing to the
other side of the bridge and let go(x) It should be smooth sailing for the rest of the
level.Trust me i've beet the game 2 times and you'll get the hang of it eventually.

to get past the first level when you get up to hyde shoot him and dodge him wen he goes
near you get out your blades and slice him to bits