Psi-Ops: The Mindgate Conspiracy cheats for the Xbox

Cheat List
To enter these, simply scroll down to “Extra Content" and pull the right trigger, or push the R1 button. A keypad will appear. Game Cheats:

Take Less Damage: 548975
Use less PSI power: 456456
AllPowers: 537893
Unlimited Ammo: 978945
No Head: 987978

Playing Modes

Arcade Mode: 05051979
Coop Mode: 07041979
Survival Mode: 7734206
Dark Mode: 465486

Nick Models

Training Nick: 564689
Urban Nick: 484646
Wasteland Nick: 975466
Stealth Nick: 456498

Sara Models

Sara: 135488
Psi Sara: 468799
Suicide Sara: 678999

Barett Models

Barrett: 497878
Training Barret1: 196001
Training Barret2: 196002
Training Barret3: 196003
Training Barret4: 196004
Training Barret5: 196005
training Barret6: 196006

Wei Lu Models

Wei LuL: 231324
Dragon Wei Lu: 978789
Tranquility WeiLu: 654654

General Models

General: 459797
Clown General: 431644

Other Models

Marlena: 489788
Tonya: 136876
Fetish Pyro: 231644
Bikini Pyro: 135454
Saranae: 65496873
Jov: 468987
MP1: 321646
MP2: 698799
MP3: 654659
Jack: 698798
Soldier: 365498
Burned Soldier: 454566
Labcoat: 998789
Dock Worker: 364654
Komiko: 978798
Scorpion: 546546

Extra Missions

Pitfall: 05120926
PanicRoom: 76635766
Up And Over: 020615
Stop Lights: 945678
Gasoline: 9442662
Bottomless Pit: 154897
TK Alley: 090702
Gear Gauntlet: 154684
Tip The Buddha: 428584
Psi Pool: 565485
Aura Pool: 659785
Bouncy Bouncy: 568789
Gnomotron: 456878

Cheat: Guard Suicide
To make a guards shoot themselves in the head you have to use mind control them then hold both Analog sticks. This takes up a lot of Psi energy so be careful.
DEMO Hint: Sneak Peak
Note: this cheat works only for the demo... In the first demo mission after killing the three guards in the second area press the red button turning off the lasers at the next door go through the door then you will see another door in that hallway. When you try to open it, it says "door locked for demo" simply use remote view (left on D-pad) and you can pass through the door and explore what the actual game's first level contains.
Hint: Fusion Tower Shut Down
In the Fusion Tower, there are four rooms: K-1, K-2, K-3 and K-4. The goal of this puzzle is to hit these switches in order. Each room contains one switch. You need to flip all four of these switches to overload the fusion reactor and move on to the next area. Okay. You start off in room K-1, but don’t hit this switch! They must be flipped in this order:

Now, while you stay hidden in K-1, mind-control a bad guy and have him run to room K-3, then to K-2 and finally to K-4. You're psi-energy will drain pretty fast while you're doing this, and of course with every switch you flip, the fusion blast becomes faster and more powerful, so be patient. It takes practice, but you'll get it. After the first three are down, all you have to do is flip the last switch in K-1 and you're done! But watch out for the meat-puppet soldiers that come charging in the room. Dispose of them (and anybody else that gets in your way) and run to room K-3. A door has now been unlocked.

Submitted by silent_jonny

In the Fusion Tower,I found that fliping the switches in the order of K-1, K-4, K-2, K-3 also works to shutdown the reactor. I realize that is the reverse of anothers suggestion, but this way you don't have to worry about the people in the reactor chamber trying to kill you. Also, this way you don't waste as much Psi-energy if you flip the first two switches yourself, go to K-3 and Mind Control a guy to flip K-2 for you.

Submitted by Pyro maniac
Hint: Skin Reign
Some skins have special abilities in the game:

Edgar Barret skin ... Can lift heavy objects that Nick can't lift (only works while fighting Barret and each stage after). Psi drains very slow.

Jov Lenov ... Can mind control anyone (including MP3 enemies but not bosses) anytime and can make MPS commit suicide at any time. Psi drains very slow.

Marlena Kessler Her skin ability lets you throw faster pyrokinesis and the shot goes through most objects until it hits the wall. Psi drains very slow.

The General (default version) ... All of the above powers are applied.
Unlockable: All Powers
Complete the game to unlock all powers.
Unlockable: Arcade Mode
Complete the game. There will be no movies or cinematics and scores are given like in an arcade game.
Unlockable: Extra Missions
Find gnomes throughout the game in order to unlock extra missions.