Fusion Tower Shut Down
There are 4rooms in the Fusion Tower : K-1, K-2, K-3 and K-4. The goal of is to hit the switches in an certain order. Each room contains a switch. You need to flip all 4 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:

K-3
K-2
K-4
K-1

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 will get it. After the 1st 3 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.

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 1st 2 switches yourself, go to K-3 and Mind Control a guy to flip K-2 for you.

DEMO Hint: Sneak Peak
*** This cheat works only for the demo
In the 1st demo mission after killing the 3 guards in the 2nd 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 (up on D-pad) and you can pass through the door and explore what the actual game's 1st level contains.

Arcade Mode
Win the game. There will be no movies or cinematics and scores are given like in an arcade game.

Skins

Training Nick	Finish the game on easy
Urban Nick	Finish the game on normal
Wasteland Nick	Finish the game on hard
Stealth Nick	Finish the game on elite
Sara	Finish the game on normal
Sara (psi)	Finish the game on hard
Tonya	Finish the game on hard
Sara (suicide)	Finish the game on hard
Marlena "Pyro"	Finish the game on elite
Marlena "Pyro" (leather)	Finish the game on elite
General	Finish the game on elite
General (clown)	Collect all 6 orbs in the General Boss Battle
Barrett	Finish the game on elite
Jov	Finish the game on elite
Wei Lu	Finish the game on normal
Dragon Wei Lu	Finish the game on hard
MP1	Finish the game on easy
MP2	Finish the game on normal
MP3	Finish the game on hard
Jack	Finish the game on elite
UN Soldier	Finish the game on easy
Burnt Soldier	Finish the game on normal
Labcoat	Finish the game on easy
Dockworker	Finish the game on easy
Komiko	Finish the game on normal

Extra Missions
Description: Find gnomes in order to unlock extra missions.

Floor of Death	Gnome in level 4
Panic Room	Gnome in level 3
Up And Over	Gnome in level 4
Stop Lights	Gnome in level 7
Gasoline	Gnome in level 6
Bottomless Pit	Gnome in level 4
TK Alley	Gnome in level 2
GearShift	Gnome in level 3
Tip The Idol	Gnome in level 1
Psi Pool	Gnome in level 6
Aura Pool	Gnome in level 8
Bouncy Bouncy	Gnome in level 2
Survival Mode	Gnome in level 3
Gnomotron, Unlock all extra missions	find all Gnomes

All Powers
How to unlock: Win the game to unlock all powers.

Guard Suicide
Description: Make a guards shoot themselves in the head
How to: You have to use mind control them then hold both Analog sticks. This takes up a lot of Psi energy so be careful.

Cheat List
To enter these cheat codes, 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

Tattle tail
If a man with a can of air that he can spray will pull theclosest alarm so use your md
or your tk to keep him away from the emergency bell (alarm) but keep away from him he can still kill you with their spray.