If u got to backlot in old school free for all go were the mounted mechene gun is the big tower thing not the small one there will be stairs once on the top floor jump on the rail and go up and jump try to make it where the wood windows are then go in prone and lok up and down while going right if u did this right u should be able to stand up go toward the back of the map until u drop about 1 inch then go forward until the widow with the stairs jump in a u can be on the top floor then jump acrooces the roofs have fun