Hey, thank you for playing, we enjoyed your playthrough!
Thank you so much for elaborate feedback, we'll make sure to put it to good use.
We had planned to make the game slightly lengthy but because it's our first game, we kept it concise enough so that we can complete it and gain enough confidence to make another game.
We didn't have scope for multiple endings as given the ending - Nikki realises that she has been dead all this time and she was roaming around in her own house as a spirit, which is why she couldn't open doors or such, only comment about things. It was very much a planned linear experience from the get go.
But your suggestions about alternate possibilities are great and we'll make sure to implement these ideas in our future projects. Thank you :)