Dead Space 3

After clearing out the ship, you will reach the end of the objective marker in a room with the gravity panels on either side, with a discharging electrical transformer. Collect the Electro Shot mod access the terminal in the final room. You can also find a circuit behind the door that requires a wrench.

Successfully complete the game. In this mode, only classic weapons through blueprints, there is no co-op mode, aiming is in the original style, and the difficulty setting is locked to hard.

Complete the game on Classic mode to unlock this weapon.

Successfully complete the game. In this mode, you will be sent to the start of the game any time you die.

You can perform this cheat anywhere in the game, but it works best if you put it to use near a checkpoint and bench. You'll need to be playing with a friend, preferably one who is equipped with a headset so that you can communicate as needed. Start by giving your friend the items you wish to duplicate. After the trade is completed, exit out to the main menu and then immediately have the friend who received your loot save and quit from the pause menu. The trick only works if you follow that precise order, and quickly. If you did it properly, both players should now have the desired items in their inventory.

When picking up an artifact, advance to the next location to go past a doorway. Once you have passed the door, let it shut and reopen. Now return to the location where you found the artifact and in its place you should find resources such as the semiconductors, tungsten, scrap metal, transoucer and health packs. You can repeat this trick as often as you like.

Have a saved game file from Mass Effect 3 to get the N7 armor from that game.

This feature will become available when you complete the game once. In New Game+ mode you begin a new playthrough with your previously earned inventory and resources. The following is a list of things that can be unlocked in New Game+ mode.

Unlock +3 Clip Circuit Set:
Beat the game on casual difficulty.

Unlock +3 Damage Circuit Set:
Beat the game on impossible difficulty.

Unlock +3 Reload Circuit Set:
Beat the game on normal difficulty.

Unlock +3 Speed Circuit Set:
Beat the game on hard difficulty.

Unlock Builder's Circuit Set:
Collect ALL 12 Blueprints.

Unlock Comms Circuit Set:
Collect ALL 36 Audio Logs.

Unlock Crafter's Circuit Set & Deep Dig Suit:
Collect ALL 73 Weapon parts.

Unlock Devil Horns:
Beat Classic mode in New Game+.

Unlock Earthgov, Unitology, S.C.A.F., and Alien Circuit Sets:
Collect ALL of the specific set of artifacts.

Unlock Engineering Suit:
Beat the game on any difficulty setting.

Unlock Flight Suit:
Collect ALL 40 artifacts.

Unlock Hostile Enviornment Suit:
Finish ALL 10 optional missions in Co-Op mode.

Unlock Mega Resources Deposit:
Beat Pure Survival mode in New Game+.

Unlock Mk-II Overclock Parts Set:
Beat Pure Survival mode in New Game+.

Unlock Mk-II Overclocked Attachment Set:
Collect ALL 61 Circuits.

Unlock MK-II Overclocked Frame Set:
Complete ALL 10 optional missions.

Unlock MK-II Overclocked Module Set:
Collect ALL 71 logs.

Unlock Mk-II Overclocked Tip Set & Flight Suit:
Collect ALL 40 artifacts.

Unlock Research Circuit Set:
Collect ALL 35 Text Logs.

Unlock Retro Mode:
Beat Hardcore mode in New Game+.

Have a saved game file from Dead Space 2 to get the Planet Cracker Plasma Cutter when you reach the first workbench.

Successfully complete the game. In this mode enemies will not drop health or ammunition, all items must be crafted at the bench, and the difficulty setting is locked to hard.