Click-and-Drag
Here's a rather interesting cheat that you can use at your leisure:
First of all, bring up the console screen by holding down Ctrl + Alt + "Tilde" (the button next to "1"). Then type in "Com_allowconsole 1" to be able to bring up the console screen by only pressing Tilde. This will save you a lot of trouble.
As for the main cheat, type in "Set g_dragEntity 1"
If you click on something such as a moveable object, monster or ragdoll, you'll be able to drag it, or even toss it, around with the mouse. The objects name will also be displayed when clicked on. How cool is that? You can't affect walls and such though.
Note: You can't interact with the environment or any characters normally or use any weapons while the code is on effect. Replace the "1" with a "0" to turn off the code.
More tricks, tips and cheats for this game are right here - Doom 3 cheats
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