I hope you haven't got a bug.......Anyways, Well you climb up the pole, then you jump on to the box and climb round then jump onto the platform attached above it. Then really just face the sign and you should see shiny bronze. Grapple that, then jump on that. Keep going up and then you come to the next sign with silver shiny stuff. Grapple that and then you should be OK to get on with the level!