I have one simple warning which should be basic common sense for modding:

BACKUP THE FILE THIS GUIDE TELLS YOU TO CHANGE AND BACKUP YOUR SAVE DATA, I HOLD NO RESPONSIBILITY FOR ANY UNINTENDED ISSUES/GLITCHES/BUGS THAT MAY ARISE FROM CHANGING THIS GAME'S FILES.

Your save files are located in your Steam\steamapps\common\Enclave\Sbz1\Save\*Name of Save* (typically the folders are called Game #)

After backing your saves up, go back to the main Enclave folder and backup "environment.cfg." This is the file we will be using to enable the console. After backing that file up, open it in notepad and add the following line to the bottom:
CON_ENABLE=1
After doing that, save and close the file and launch Enclave.

After Enclave has been launched and you load up or start a new game, press the tilde key (`) and you will see the console pop up, type any of the following commands into the console:

• cmd giveall - Doesn't actually give you items, but does give you God mode. Retype it to deactivate God mode.
  
  
• cmd noclip - no clipping mode (allows you to go through solid objects)
  
  
• cg_menu cheatmenu - After typing this and pressing tilde again, it gives you a cheat menu [!] with options for God mode and to complete the mission.
  
  
• help - Gives you a list of commands.

NOTE: When you bring up the cheat menu, you must choose either one of the options or else the game will crash if you press escape to close it. If you don't want God mode, simply retype the menu command and choose it again, you will know if you have God mode by the color of your life bar. If you're in God mode, it'll be an odd green/purple color and if you're not it'll be the regular red.

If I or someone else manages to find a fix to that issue I will post it here.

All in all, I hope you found my guide informative and helpful, especially if you want to get through some of the trickier parts of the game or if you just want to fool around. Thanks for reading.