Yes, mouse controls are necessary. So that you can control entirely with mouse, manage speed with up and down, change and fire weapons with mouse buttons.
So the controls are horrible, but unfortunately, there is no remedy for that. That's just physics.
However the graphics are excellent. I will use this style in my future games.
OMG it's moving! Something hanging from the ceiling is moving and looks like worm. I will have nightmares o_O
But tell me, how it's animation is made? It looks like non-Unity animation using bones.
Well, hard to put "visible grid" when you will also have non-square tiles going on (you can basically mix and match square with non-square). Also they're snapping fairly well so you won't have any troubles putting your creations up..
yes it is :DD