There are various places where you get to choose what to do and each of them can influence the ending.
For example: at the beginning, when you're still in town, you can decide to go to the market instead of going to the forest directly (follow the map). You're going to meet some new characters.
Or you could choose to ignore the wolf when you meet him, and that's going to give you some other options too
So, I tried it out and I can get the other endings. Could you please try to redownload it again and see if it works? It might be the files being corrupted.
SPOILER
By going to the woods directly (right, left, left, right) and ignoring Wolf, you're going to fall into the lake and drown since nobody's going to rescue you.
If you talk to Wolf the first time and then refuse to go to his house, you're going to get another ending.
Thanks, sorry for the late reply, I managed to get the other endings but I must play it from the very beginning (not from reloading when in the middle of picking choices because I think that's what makes me can't get to those different outcomes). Anyways does the locked rooms in wolf's house can't be ever opened?
There's also this bug where if you already have the detective game side story and checking the extra then returning to the main menu, the detective game box will become stuck until the loading screen here like this
about the detective game being stuck, i've tried to fix it previously but it still happens sometimes when you click fast. unfortunately i'm not sure what causes it either x.x
to open the door in wolf's house, you need the key
SPOILER
meet hansel and gretel in town (go left, right after leaving home in the morning)
talk to wolf
don't give the necklace back to witch
go to wolf's house
stay inside
look around wolf's house