I appreciate the feedback. For some reason subtitles never crossed my mind even though I had a script written down. Congrats on reaching getting to any of the endings.
I don't know what endings you reached but given how far you likely got, following should be useful to reach endings
1. Being wrong on floor 4
2. There is an ending for buying on the building on floor 1. In order to achieve this you need to avoid bankrupting the casino. You'll want to have negative lives to spawn on floor 6, if you take the pot of gold (the casino's money) before enter you should be able to bet 10x your current money and although you die the casino will obtain everything you own. Once you have over a million go to floor 1 and buy the building.
3. There is one for bankrupting the casino
4. There is one for entering the house not as 104
5. There is an ending for solving the main puzzle which requires solving floor 4 and the real floor 6. For the floor 6 u don't need to memorize the answer as when you get the code you can type in it the top left and just copy it so you can then paste it when u get to the floor.
And the last 2 endings is by solving floor 10 when having last seen floor 2 instead of floor 11 and solving floor 3 when having last see floor 11 instead of floor 2 (which I didn't fully realize until I tested it but is already done at that point).