General information
Running Lone Survivor in windowed mode can be accomplished by editing the configuration file found at: <path-to-game>/META-INF/AIR/application.xml Open this file in a text editor and find this section (may occur on lines 71 to 81).
<path-to-game>/META-INF/AIR/application.xml
<!-- The window's initial width in pixels. Optional. --> <!-- <width>640</width> --> <!-- The window's initial height in pixels. Optional. --> <!--<height>480</height> --> <!-- The window's initial x position. Optional. --> <!-- <x></x> --> <!-- The window's initial y position. Optional. --> <!-- <y></y> -->
Change this section to the following:
<!-- The window's initial width in pixels. Optional. --> <width>640</width> <!-- The window's initial height in pixels. Optional. --> <height>480</height> <!-- The window's initial x position. Optional. --> <x>0</x> <!-- The window's initial y position. Optional. --> <y>0</y>
~/.steam/steam/userdata/<user-id>/209830/