The chain of events reported are.
Tail strike, followed by stbd engine strike on attempted landing RNWY25, after go around in the hold for some time and declaring emergency with stbd engine fire, landed on RNWY35 where stbd gear collapsed on touchdown. Engine fire attributed to ground strike on attempted landing on RNWY25.
It would appear the crew were quick in shutting down engine and preventing an in flight fire from spreading.
The disturbing factor is an aircraft with engine fire, captured on video footage over a city with a population in excess of 15 million.