I don't want a save game thanks I just wanted to know what triggers the different endings. I'm convinced it's something other than just the dialog options.
Viewing post in Just wanted to share the result of my playthrough
I remembered. On my first playthrough I was in no hurry to go the church. I talked to priestbot first and met the nun only on the next day. On my second playthrough I went to the church straight after MC was mentioned it. That time it is the nun who was there, and the priestbot on the next day. I talked to her and choosed the option to cheer her up (that she is capable to become a full-fledged nun). It's the first key option. Then I noticed that their place is in rubble - it's a the second key option. On the third day priestbot fell into BSOD after update, and the day after that I agreed with nun to help them - third option. After priestbot returned to normal state I convinced them that he should go to the Vatican and check for himself what happened - fourth option. The best way is to visit church on nun's hours and not before.