Cheat: Cheat List
There are cheats for the PC version of Mass Effect, but in order to use them you must first do some document editing. Because of the fact that you have to edit an installed document, you are doing so at your own risk.

Head to the folder where the game is installed (which will end in BioWare\Mass Effect) and then go to Config. Open the file BIOInput as a text document. Then, find the line Engine.Console and, directly underneath it, create a new line that says ConsoleKey=Tilde (this is the best button choice to bring up the cheats console). Save your file thereafter. Once you play the game again, you can press the tilde (~) key to bring up the cheats console, where the cheats below can be inserted.

adjustcredits +/- X - Add or subtract credits where X equals amount
fly - Gain the ability to fly
giveall - Acquire all of the game’s gear, save armor
giveallarmor - Acquire all of the game’s armor
giveallarmor X - Acquire all armor where X equals the maker
giveallarmorhuman X - Acquire all human armor where X equals the maker
giveallarmorkrogan X - Acquire all Krogan armor where X equals the maker
giveallarmorquarian X - Acquire all Quarian armor where X equals the maker
giveallarmorturian X - Acquire all Turian armor where X equals the maker
giveallbioamps - Acquire all of the game’s bio amps
giveallgrenades X - Acquire all grenades where X equals the maker
giveallomnitools - Acquire all of the game’s omni tools
giveallweapons X - Acquire all weapons where X equals the maker
giveallxmods - Acquire all weapons and armor modifications
givetalentpoints X - Receive talent points where X equals the amount
givesuperarmor - Acquire the Super Armor
givesupergun - Acquire the Super Gun
givexp X - Receive experience points where X equals the amount
ghost - Allows you to walk through hard objects like walls
initcredits X - Set credits to amount as represented by X
initsalvage X - Acquire Medigel where X equals the amount
setparagon X - Receive Paragon points where X equals the amount
setrenegade X - Receive Renegade points where X equals the amount
teleport - Move around rapidly
walk - Use this command to disengage fly

Hint: Wear Any Piece of Armor
Armor in Mass Effect is created for specific types of creatures and classes. However, there’s a way around that so that you can get any character to wear any piece of armor. To do it, try the following technique below.

1.) Head to the equipment menu and head to the character you want to re-equip, finding the piece of armor you want him or her to wear regardless of the character’s race or class and regardless of the armor type.

2.) Including the piece of armor you want to equip, count down the pieces of armor to the bottom of the inventory list.

3.) On any piece of armor, click the upgrade option. On any upgrade, opt to turn it into Omni Gel and then quickly opt out. This should return you back to the upgrades menu. Count down from the bottom of that list the number that you earlier acquired when you counted down on the armor list. Now click on that upgrade and transfer the upgrades by hitting yes.

If done properly, you should now be equipped with the desired piece of armor regardless of type.

Hint: Easier Aiming
If you want to have an easier time shooting and killing fast-moving enemies such as Geth Hoppers, Geth Drones, and the like, try the following. Open up the command wheel when engaging them in combat. This will freeze the game, but you’ll still be able to aim your gun at foes all the while. Aim at the fast-moving enemy and then get out of the command wheel. This will score you direct hit after (admittedly cheap) direct hit!