hudfreegamer: Here's a more comprehensive guide I found:

Open the file "environment.cfg" using Notepad. This file is located in your Enclave install folder. Add the following line to the file:

CON_ENABLE=1

Save the file. While playing, press [~] to bring down the console, then type any of the following codes:

cg_menu "cheatmenu" - Cheat menu
cg_menu "god mode" - God mode
cg_menu "complete mission" - Win current mission
cmd giveall - Give All
cmd noclip - No Clipping Mode

You can also add the following line to the "environment.cfg" file:

IN_HARDCORE=1

And you'll be able to use some cheat key combinations in the game. For the list of combinations view the "config.mpp" and look under the "Keyboard & mouse" section