I noticed that it doesn't say what damage is inflicted by falling. There is the rule that for each 10KPH (rounded down) in a vehicle crash you take a d10. using https://www.omnicalculator.com/physics/free-fall I get the following for each 10 feet 10 27.8Kph 2d10 20 39.3Kph 3d10 30 48.2Kph 4d10 40 55.7Kph 5d10 50 62.2Kph 6d10 60 68.2Kph 6d10 70 73.6Kph 7d10 80 78.7Kph 7d10 90 83.5Kph 8d10 100 88.0Kph 8d10 so starting with 2d10 @ 10ft and adding 1d10 per additional 10 feet