I thought I had done this for Mass Effect but I guess not, I know I have one for Dragon Age and Fallout. Okidoki. First of all, you need to get the .ini file set up to use the console, this is from the wiki:http://masseffect.wikia.com/wiki/PC_Cheats
Backup Your ProfileUsing the cheat codes mentioned on this article may alter your profile permanently, and tag it as invalid. Therefore, it is recommended to backup your entire profile for the option to revert back later on.
On Windows XP/2000: X:\Documents and Settings\[username]\My Documents\BioWare\Mass Effect
On Windows Vista/7: X:\Users\[username]\Documents\BioWare\Mass Effect
Note: replace X with the drive letter where your Windows system is installed on, and replace [username] to the user that you are logging into the system with.)
 Enabling The ConsoleTo enable the console, browse to and open the file Mass Effect\Config\BioInput.ini (the full location is mentioned above) in any text editor (Notepad, for example), but not with rich text editor (Microsoft Word, OpenOffice Write, WritePad, and the likes).
In the file you opened, search for [Engine.Console], and add the line ConsoleKey=Tilde just under it.
By default the [Engine.Console] section will contain:
HistoryBot=-1ConsoleKey=Tilde The code addition is marked as colored text
Note that some keyboard layouts, specifically on non-US English layouts, the Tilde key will map differently, and the game engine will not recognize the Tilde keyword. In this case, you will need to select a different key, such as Tab, CapsLock, or any other to function as the console key.
Ok, these are the codes I use when I start a new career:
givexp 400000 = level 56 but
this can vary. I always save first, then experiment with the amount of 0's, don't use over 5!! It's really overkill, even for me.
I used to use giveallxmods but I don't use that anymore, it's ALL the upgrades and you'll go way over your inventory and it's more fun finding the upgrades, so I don't use that one anymore.
Also, I have discovered givebonustalent and this is my new most favorite command! I love playing as an adept BUT I also like the soldier. By using givebonustalent, you can start out as a soldier and add the tech and biotic skills! I have to check in game how many you can safely add because you'll run out of room on the hud and then not be able to use the talent, so there is a limit. I'll post a screenshot of my newest one with the talents I added. She's working out nicely!
To use that code, there are numbers that correspond to the talents, so to give the Throw talent you would type givebonustalent 49
Here are the talent codes:Adding Additional Talents
In the console, type "GiveBonusTalent X", replacing X with one of the numbers below.
7 Assault Rifles
21 Sniper Rifles
98 First Aid
I happen to have a lot of adepts so now I can add the shotguns, sniper rifles and some of the electronics, it all works out really great! So, I hope that can get you all started on your cheating ways!