I genuinely love this little adventure, and I like the different endings that you can get... they all feel fitting for a story like this! I also really like the poor dwarf who we meet in the banquet... I feel kinda bad that we can't free him. I got almost all the endings, but I'm curious about a few of them... The third ending eludes me, but I assume it has something to do with either the banquet or the brass dragon. As for the 10th, 11th and 12th endings, I assume they have something to do with the Atronaches that aren't the Water one. Are there items somewhere I overlooked? Or is there another secret to meet them? Thanks for making such a fun game!
Ending 3 is slightly tricky to find, but it's possible you've already found it. Just pushed an update that fixed Ending 3 not appearing in the ending list when reached.
Endings in the list are grouped by the room they're found in. That may help narrow things down.
The dwarf is also a favourite of mine! Don't worry, he's plenty happy and well cared for (even if he doesn't have much choice!).