I liked the game. Although it's low on content right now, I think the concept is pretty good and opens up a lot of design space for cool ideas if you decide to keep working on it. Nice little touches with the minimap and the day/night.
Movement in my game is simply topdown based on this tutorial:
On top of that I also use KinematicBody2D look_at to always look at mouse position. I can send you the code if you prefer, but it's basically this plus some more uncommented mess bound to the other game controls.