Almost all of the endings end with you having to go on stage and make a speech(except for the special ends, which you can check the requirements for in the endings sections in the extras screen). The endings are almost solely based on your reputation with each house. For each character you have to build your reputation with each house throughout the playthrough , and once you have enough reputation with a house you can choose that house's leader during the speech scene and that house will prevent you from dying after. Here is the endings guide if you need further info: https://steamcommunity.com/sharedfiles/filedetails/?id=1857222954