I didn't really know what I was supposed to do in this game. I appreciate that it's a first for you, so try adding some story or explanation for what the goal is and what the player is supposed to accomplish. Being unable to move the character diagonally when the world is arranged isometrically and at an angle really messed with being able to move through the pews.
Well done for a first game. I can seethe effort that went into it. If you keep up the work, I'm sure something like this could be quite nice to play.