Roof Escape

Building Escape!

You’re stuck on the roof an abandoned building. All roof-top access doors are locked from the inside, and even if they weren’t, entering the building is more hazardous than jumping because its filled with zombies. The building is 200m high, and on one side of the building, there are 2 hooks, one at roof level, and one 100m lower. You have 150m of rope, a knife, and your brains. How do you get down safely?