Thank you for a very nice comment, we are very happy to hear that you liked our game.
As this was the first "full" game we made together, and the first game jam any of us have attended, we are really happy with the end result.
Investigation through NPC interaction was something we really wanted to add as well, like you pointed out, but we simply didn't have the time to implement that in a functional state, so they ended up just being a supplement to the game universe experience.