To note, the game generally cycles between your first and second meeting with Aster. Some encounters or events are only possible in one of these phases, and some cannot be seen after getting certain items. Resetting your progress, or being punished by Azra later on, will give you another chance at these.
Some of these descriptions and endings are pretty self-explanatory, while others are quite tricky to find. This section lists all of them and gives guidance where I feel it's helpful.
There is a hidden stat on whether or not Aster sincerely wants to help your or not, as well as sincerely trusts you or not. These have consequences towards the end of the game. She will only want to help you if you exhaust all conversation options in your first meeting, and then make it evident you aren't a threat. There is a bit of RNG involved in this on most paths, but asking for a hug is the shortest path with guaranteed success in making her like you.
1. Receive Azra’s greeting at the front door: walk up the front path and enter, with or without the Spider Key.
2. Demonstrate wholly terrible instincts around cowplants: try to eat the cake, then submit.
3. Fall victim to the cowplant’s good fortune: try to take the root, and fail to escape or submit if the plant grabs you.
4. Investigate the noise in the woods.
5. Allow the wolf to do as he will.
6. Run from the wolf, rather slowly.
7. Run from the wolf, and slip in the snow.
8. Flee from the spider, to no avail.
9. Gaze upon the spider’s visage.
10. Receive Azra’s greeting at the back door: random chance any time you enter through back door.
11. Try to go back outside from the dining room.
12. At your first meeting, attack Aster, to no avail.
13. At your first meeting, enjoy a pleasant hug from Aster.
14. At your first meeting, enjoy a delicate kiss from Aster.
15. At your first meeting, you back out from Aster offering to eat you, struggling all the way:
16. At your first meeting, you back out from Aster offering to eat you. You didn’t get her name. Same as 15, but don't introduce yourself or talk much first.
17. At your first meeting, Aster catches you when you tried to leave.
18. At your first meeting, Aster catches you after you left.
19. At your first meeting, offer yourself up to Aster’s beautiful mouth.
20. At your first meeting, offer yourself up to Aster’s beautiful ass.
21. At your first meeting, you want Aster to punish you. Same as 15-16, but you had a full conversation first, and you relax reassuringly.
22. At your second meeting, you offer yourself up to Aster’s beautiful mouth.
23. At your second meeting, you offer yourself into Aster’s gentle nethers.
24. At your second meeting, your attempt to flee goes painfully wrong. Chance to happen when you try to run for the door.
25. At your second meeting, your attempt to flee is a moment too slow. See 24, this is another possible outcome.
26. Having captured you again, Aster doesn’t feel comfortable with you, and only feigns an interest in helping. Aster acts like she's going to ask you questions so you cooperate more easily.
27. Having captured you again, Aster shows a glimmer of sincerity, finishing you off anyway. While she wants to help, you refuse to acknowledge her after she captures you.
28. Having captured you again, Aster demonstrates a calm sense of cruelty.
29. Having captured you again, Aster demonstrates a sadistic sense of cruelty.
30. Fighting Aster in the dining room, you simply give up.
31. Fighting Aster in the dining room, your best effort is not enough.
32. In a deeper conversation, Aster is not fond of your answers.
33. In a deeper conversation, Aster pulls a dirty trick, stealing more than just your life. In her questions, while holding one mangleroot, give it up to her. She does not believe that one will suffice, and sees you having it as a risk to herself. If only there were some way to give her two...
34. Deciding to give yourself to her of your own volition, you and Aster find a shared love of role-playing: You get to her questioning you, but decide her keeping you isn't so bad.
35. Deciding to give yourself to her of your own volition, Aster tenderly accepts you. See 34.
36. The wolf takes your head: Return to the woods after finding any ending, and then getting eaten again by skinny Aster in any way. This rewards a very powerful item.
37. Azra makes an entrance, ending both you and Aster for good: Aster wants to help you, and asks you a series of questions after capturing you in your second meeting. Don't give her too many answers she doesn't like, or you'll find ending 32. Azra will appear, severely punishing both of you.
38. Azra makes an entrance, mocking your ill-thought attempt at escape: Same as 37, but you try to escape with the Clockwork Heart. If you forgot to do something important first, Azra severely punishes this attempt.
39. Moments from freedom, Aster is granted her victory.
Endings:
1. Aster kills Dalia, and isn't too torn up about it. Several paths to reach this, generally while Aster is angry (or even just too horny
)
2. Aster kills Dalia, but feels terrible about it. Several paths to reach this, generally where there is more of a connection between the characters.
3. Dalia manages to kill Aster. This deed is rewarded terribly. You get Aster into the living room, and get lucky with struggling or use a mangleroot against her.
4. Azra eats both girls. This is from ending 37 or 38.
5. Glorious escape! Hoo boy. You must: Get eaten once by a big monster while trying to leave the dining room, ahead of time, Dalia vaguely remembers this across loops unless reset. Put a mangleroot on the table statue ahead of time. It will stay there unless your progress is reset. Find the Clockwork Heart from death #36 (can also be ahead of time). Enter the front door with the Spider Key, using the Clockwork Heart to sneak by Azra. Ascend the tower and take this item. Put this item on the table statue. You'll have two roots, and the statue will disappear. Earn Aster's desire to help (again, talking to her and then asking for a hug is the easiest way). When you return, use the "get off me" choice to let her capture you, and then respond to get to her questions. Answer ALL of them correctly to earn her trust, including admitting you were instructed to kill her, and that you've seen the big monster. If her final question is "do you promise not to hurt me", you missed something and she does NOT trust you. Azra will appear, and eat Aster in front of you. Once Azra touches your head, use the Clockwork Heart to rewind to just before she appears, and then make your escape together.
After all of this - proceed through the final scenes, and make the best choice you can.