It's all clear now that there was enough fuel aircraft was serviceable, weather was fine and there was no traffic. The pilot missed TOD because either he was sleeping or doping. From the local audios and videos the following things are reasonably clear:
1. The pilot was on continuously rostered for 6th or 7th day without weekly off. When most of the pilots and Aircraft are on ground why should this be the case not known.
2. It was not possible that he wasn't fasting,
3. He missed the descent and asked for it much later.
4. He never cross checked his vertical and speed profile.
5. When ATC told him he was high he just dived the aircraft didn't use the gear to increase his rate of descent.
6. When given a vector refused by saying we are comfortable. Possibly a case of false glideslope.
7. He lowered flaps but was unable to slow down the overspeed warning came on and remained on.
8. Flap overspeed warning suppressed gear not down warning.and the excess speed prevented GPWS from triggering the "Too low gear warning""
9. Only GPWS too low terrain remained on which was ignored as false since RW was visible straight ahead.
10. On touchdown they realized gear was not down.
11. Being unsure of stopping within the remaining distance they executed a go around.
12. Possibility of Engine damage due to contact never occurred to them because they asked for another radar vectored ILS and accepted a divergent heading away from runway.
13 it's only after Engines failed they turned towards runway with gear down.
14. Due to insufficient height trying to clear the buildings Aircraft stalled and crashed.
15. Had the engine damage possibility occurred to them they could have asked for a circling approach and would have made the runway even without the engines.