Its good but the movement was throwing me off. Like how you press S or Down Arrow to go downwards even though it looks like you are going left. Maybe that is just me though
I would change the axis. because the way I see the map is that the bottom left corner is the corner closest to the screen. But with the way it currently is the bottom left corner would be the left most corner. Kinda hard to explain so I made this. Meaning the A and D keys would move the way the W and S keys moved originally. You could make a setting option to change the way it moves maybe if you still like the original movement.