These are a series of registry keys used by various iterations of the Halo engine and its tools. Registry keys ending with a trailing slash indicates that it is a key (and the value is the (Default)
value within it), and any that end without it is a value.
Game
Tools Directory
[REG_BINARY] HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Halo 2\tools_directory
Map set (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Map Set
Audio Settings
Whether or not to enable the low-pass filter (?)
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\LowPassEnable
Limit of mono sounds (?)
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\MonoCount
Whether or not to enable reverb
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\ReverbEnable
The speaker configuration selected
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\SpeakerConfig
The number of stereo speakers
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\StereoCount
The volume of sound
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Audio Settings\Volume
Video Settings
Whether or not to use anti-aliasing
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\AntiAliasing
The specified aspect ratio
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\AspectRatio
The brightness of the game
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\Brightness
The display mode of the game (?)
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\DisplayMode
The gamma of the game
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\Gamma
The size of the in-game HUD
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\HudSize
The level of detail (LOD) to use
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\LevelOfDetail
The screen safe area
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\SafeArea
The screen refresh rate
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\ScreenRefresh
The screen resolution's X value
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\ScreenResX
The screen resolution's Y value
HKEY_CURRENT_USER\Software\Microsoft\Halo 2\Video Settings\ScreenResY
Guerilla
Recent files
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\guerilla\Guerilla\Recent File List\File1 [REG_SZ] HKEY_CURRENT_USER\Software\bungie\guerilla\Guerilla\Recent File List\File2 [REG_SZ] HKEY_CURRENT_USER\Software\bungie\guerilla\Guerilla\Recent File List\File3 [REG_SZ] HKEY_CURRENT_USER\Software\bungie\guerilla\Guerilla\Recent File List\File4
Settings (unused?)
[REG_KEY] HKEY_CURRENT_USER\Software\bungie\guerilla\Guerilla\Settings
Sapien
Settings
Whether or not to enable automatic backup
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_enable
How often (in minutes) to create a new backup
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_interval
How many backups should be stored at a time
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_limit
Whether or not to limit the number of automatic backups
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_use_limit
Whether or not to use the user-provided backup path
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_use_path
Who the hell knows. (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\blah
Whether or not to create a config for tool.exe (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\create_tool_config
The size and position of the hierarchy window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\hierarchy_window_rect
Unknown (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\main_window_frame
The size and position of the main window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\main_window_rect
The size and position of the options window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\options_window_rect
The size and position of the output window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\output_window_rect
The size and position of the properties window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\property_window_rect
The size and position of the hierarchy window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\sapien_loading_window_rect
Something to do with some sort of list size (and position?) (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\type_list_rect
The size and position of the warnings window (?)
[REG_BINARY] HKEY_CURRENT_USER\Software\bungie\sapien\warnings_window_rect
Auto backup path
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\autobackup_path(Default)
Last directory (unsure if this is last level or just the most recent folder to open)
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\
Class types (all of these are blank - the value is set, just set to absolutely nothing)
Biped directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\biped directory
Crate directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\crate directory
Creature Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\creature directory
Decal directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\decal directory
Decorator Set Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\decorator_set directory
Detail Object Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\detail_object directory
Device Control directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\device_control directory
Device Light Fixture
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\device_light_fixture directory
Device Machine Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\device_machine directory
Equipment Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\equipment directory
Light Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\light directory
Scenery Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\scenery directory
Sound Scenery Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\sound_scenery directory
Vehicle Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\vehicle directory
Weapon Directory
[REG_SZ] HKEY_CURRENT_USER\Software\bungie\sapien\weapon directory