A quick small patch to polish up the game further!

Added: Broken fencing around the map's edge to help the player know they've reached the outer ring where no objectives spawn. Useful for not getting lost in Fear difficulty when you've got no map to guide you
Added: An extra keybind for the map button, M. So you can press either B or M to open the map
Added: Extra bit of text to the how to play screen to inform the player that crouching/proning reduces the enemy's sight range

And that's about it! Should help newer players get the hang of the game more.