In that part where you have to do a nade jump, right after you jump from one building to the other after getting through all the brown blocks.
Anyway, instead of doing the nade jump, go to the very edge of the building and if you look below you you should see a little ledge. you can get on it, go forward and avoid the nade jump

I made a little demo of it but I'm not sure how to post it on the forum

Someone take 5 mins to explain how I can post it and I gladly will
