Update 1.1 changelog:

Map System. By pressing "M" you can access the map. Note that if you havent collect the map you cannot zoom, pan. You only see a small area around you.
Movement keys Remap
Fixed an issue where in some rare cases on the Prison level you land on the top of the elevator.
Fixed an issue where in some controllers, the invert operation wasn't functioning.
Added the VSync option.