I played the game and really enjoyed it! Although it took a lot of trial and error for me to get the good ending, very interested to find out who it is we see at the end with the bell >:o, as I'm sure it's not the demon we just exorcised lol.
The reason it took so many tries on my part was that I guessed the demon's name wrong, I picked the fish one at first and not the actual one, however after picking the right one and looking at the demon's design I was like "ooooooh" and then I felt kinda stupid for not getting it before lol.
When it came to the other two objects I had the right idea and logic though, as I understood the hints from the girl's dialogue about her friend and how the demon kept talking about how dirty and rotten he was and how it would be "impossible" to clean him.
Something I think would be really cool for the final version would be some more CGs at important moments like when the victim hugs the exorcist, I think it would really add to the atmosphere :D
Since other people have mentioned the inventory thing and I know you know about, I won't go into much detail, but I just want to say that I agree that it would be good to have a proper inventory system.
Anyway, I really hope you have a good time with finishing this game when you're not under a stressful deadline :3