ok so i got through the gas chamber and defeted the dinosaurs but once i do this it brings me to a cliff where scrat has to use his rope to jump and swing but nothing more wants to happen its like the video game wasnt finished but it lets me drop down to where you can ride the dinosaur and knock down rock cave but i just cant pass this cliff swinging thing and its making me mad so pleaseee someone help me thanks so much. btw im at like 44% of the game PLEASE HELP!! Thanks again