Mass-effect – Are there cheat codes for Mass Effect 3 on the Xbox 360

There doesn't appear to be any cheat codes for the game that I can find. However, if you defeat Nemesis on Hard Mode he will drop something that gives you benefit.

• First Kill - Eagle Parts A
• Second Kill - Eagle Parts B
• Third Kill - First Aid Spray Box
• Forth Kill - M37 Parts A
• Fifth Kill - M37 Parts B
• Sixth Kill - First Aid Spray Box
• Seventh Kill - Infinite Ammo for One Weapon

It appears as though you must beat the game several times, and on different difficulties, to unlock everything.

Source

In reference to the link that you have added: What you are seeing on that website would be Hex Editing saved game files to give you items or change things around. It is much easier to hex edit saved game files with the PC version of the game than the PS version. The two versions share the same gamesave file format, but it would require much more effort to move a game save between your Playstation and a PC.

If you are playing on a PC here is a link that you might find helpful: RE3 Hex Editing - GameFaqs Guide

If you are playing on a PSX, PS2, or PS3 then this will quickly become a how to guide that you can probably find elsewhere.

The game comes on two discs. They are labeled "disc 1" and "disc 2." There is a second disc holder that is snapped into the spine of the case and swings freely, which keeps the two discs apart. Aside from the two discs, there's a little epilepsy warning card and a card with the game's online pass. The cover art sheet can be flipped in case you want to see a picture of the "stock" female Shepard on the front instead of the "stock" male Shepard.

I believe the multiplayer is completely on disc 1, although I haven't tested this exhaustively. The disc is not labeled as such in the case in any way.

I had to switch between discs early in the single player campaign for one of the first side missions. Going back to the main campaign, however, I had to go back to disc 1. Expect to switch discs at least somewhat frequently - this isn't like Final Fantasy 7 where you hit a particular part in the plot, change discs, and then don't look back.

Each disc is a separate install if you wish to install it to your hard drive - you'll have to go through the Xbox 360 game install process twice. Having the discs installed to the drive has not (thus far) removed the need to change out the discs.