Tenebrae 2 (and therefore Industri) uses a BSP format that is almost identical to Quake III Arena's. This makes mapping with GtkRadiant for Tenebrae 2 and industri very easy. The following is all that is required to get you started.

1. The first thing you need to do is download the following files;
   1. The Q3A/Wolf version GtkRadiant 1.4.x
   2. Files that belong in the Tenebrae2 folder
   3. Files that belong in the GtkRadiant folder
2. Install GtkRadiant 1.4.x. If you do not have a copy of Quake III Arena, fake it. By this I mean make a folder called quake3 on you hard drive and point the installation at it when it ask for your Quake III Arena folder.
3. Extract the contents of tenebrae2-dir.zip with directories, to your main Tenebrae 2 or Industri folder. This is the folder that contains the tenebrae2.exe
4. Extract the contents of gtkradiant-dir.zip with directories, to your main GtkRadiant folder. This is the folder that contains the GtkRadiant-1.4.x.exe (the 'x' could be any number)
5. Open the file GtkRadiant-1.4/games/tenebrae2.game in a text editor (like notepad) and edit the file path information.
6. Open the file GtkRadiant-1.4/games/industri.game in a text editor (like notepad) and edit the file path information.
7. Select the 'Tenebrae 2' or 'Industri' game option when you start GtkRadiant.
8. Read the GtkRadiant Manual (in the GtkRadiant-1.4/Q3Rad_Manual folder).

Thats all there is to setting up GtkRadiant 1.4.x for editing Tenebrae 2 and Industri levels.