aAAA I luvette!! The 4 medals in Ludum Dare are well deserved yuh. I'm still confused with the ending but I have an interpretation...
(Spoilers)
I think we are the killer (the protag) it makes sense because Dylan's body was in the chapel where we do our seances. Idk why Detective Tether said he was the killer but it's probably an attempt to confuse us or smth like what Mindy did to Amber in Scream 5.
I'm assuming Tether will be the vessel because in the ending he was shown as a spirit before Baphomet appears... at first I thought the spirit was the protag but Tether's face structure and clothing matched with the spirit so yuh.
Additionally, Aria said that she thinks Dylan probably misses her, I thought they knew he was dead but I guess not because even Tether didn't know about Dylan being dead when he was asked. The body wasn't discovered yet as Dylan said, he is still under the chapel. Only the bang was reported but no bodies were found. Meaning only we knew that Dylan was dead and we didn't tell anybody else bcuz we're the one who killed him ToT I feel bad for Aria :(