ps2-Destroy All Humans!

Bulletproof Crypto (invincibility)


Pause the game while playing as Crypto, then hold L2 and press Square, Circle, Left(2), Circle, Square. If you entered the code correctly, a message will appear.



Ammo-A-Plenty (infinite ammunition)

Pause the game, then hold L2 and press Left, Circle, R2, Right, R1, Square. If you entered the code correctly, a message will appear.



Deep Thinker (infinite concentration)

Pause the game, then hold L2 and press R1, R2, Circle, Right, R2, Circle. If you entered the code correctly, a message will appear. Your concentration meter must be above 0% or you will not be able to use any of your mental abilities. -From: evripple@scubadiving.com



Pox Unlocks (all upgrades)

Pause the game while on the Mothership, then hold L2 and press Square, Circle, Left(2), Circle, Square. If you entered the code correctly, a message will appear. All upgrades for the currently unlocked weapons will be available for purchase from Pox's lab.



Mmm... Brains! (increase DNA)

At the Mothership's main menu, hold L2 and press R1(2), R2(2), Left, Right, Left, Right, R2, R1. If you entered the code correctly, a message will appear.



Aware Like A Fox (maximum alert meter)

Pause the game, then hold L2 and press Right, Square, R2, R1, Right, R2. If you entered the code correctly, a message will appear.



Nobody Loves You (reset alert meter)

Pause the game, then hold L2 and press R2, Right, R2, R1, Square, Right. If you entered the code correctly, a message will appear.



Furongami movies

Collect all the probes in the indicated side mission to unlock the corresponding movie in the "Furonigami" option under the Archives menu:



Art Of The Furon: Santa Modesta

Blue Book: Saucer Blueprints: Rockwell

Evolution Of An Alien: Turnipseed Farm

Face of the Enemy: Area-42

Pathetic Humans!: Union Town

The Concept Barnyard: Capitol City



B-Movie Theater bonuses

Successfully complete the indicated level to unlock the corresponding movie under the "B-Movie Theater" option:



Furon Down!: Furon Down!

Outro Movie: Attack Of The 50 ft. President

Plan 9 From Outer Space: Teenage Zombies from Outer Space

Teenagers From Outer Space: Attack Of The 50 ft. President



Furon Propaganda bonuses

Successfully complete the Attack Of The 50 ft. President level to unlock the following entries under the "Furon Propaganda" option: Crypto, Phone Home!, Developer Darwinism: Evolution Of The Game, E3 Booth Footage, and Goofy Screenshots And Voice-Overs.



Screensaver

Allow the game to idle for awhile; eventually the screen will turn black and white and elevator music will play in the background.



Pox remarks

Allow the game to idle at the mission selection screen and Pox will make various remarks.



Control objects

When you pick something up, you can control it with the Right Analog-stick.



Super Crypto

Enable the "Bulletproof Crypto", "Ammo-A-Plenty", and "Deep Thinker" codes, then get all of Crypto's upgrades. After this you can turn into a human and walk around TK'ing everything.



Super saucer

Enable the "Bulletproof Crypto" and "Ammo-A-Plenty" codes while on your saucer. It will not get damaged or lose ammunition.



Faster Destruction in saucer

Instead of holding R1 to destroy buildings or large objects, tap R1 and the destruction will happen faster without waiting for the recharge.



Hypnotize faster

While trying to hypnotize people, quickly tap Square.



Extract DNA faster

While extracting a person's brain stem (alive or dead), quickly tap Circle. You will get their DNA easier. This is useful against the M Agents and Psi G-Men.



Extra jetpack distance

While using the jetpack, quickly tap X to go farther distances.



Getting away from the law

Don't bother trying to run away from the authorities with short legs; use your jetpack liberally to fly away. Press Left Analog-stick Forward and hold X to boost away.



Easy collect brain stem puzzles

Enter a collect brain stem puzzle and find out how many brain stems you need. Then, stand around and extract the brains and leave them laying close by. When you have enough, go to the challenge and enter it; you can easily win by doing this.



Finding weapons

After unlocking Area 42, you should see some bunkers that represent bomb shelters; they all have ammunition inside.



Finding more probes

Probes are necessary to get upgrades quicker. In order to find them all, make sure to look high up on rocks or hard to reach places. Your jetpack is essential in getting to the high places. You may have to get up on the ledge or building, then use your jetpack to fly higher to get the probe. Also when you are in Capitol City, you can find about ten probes by the broken Pentagon.



Easy DNA

If you need extra DNA, go to the Turnipseed Farm level and extract as many brains as desired. The Anal Probe Gun is a good weapon for this. It's much easier to use than rapidly pressing Circle to extract the brain stems of humans, as one charged shot from the Anal Probe will make their brains explode. You need three successful hits on Majestic Agents, two successful hits on the soldiers, and one hit for the policemen. Normally you can choose to extract your brain stem with the probe button (L1) and tapping Circle rapidly to extract DNA faster. However this is not an effective tactic to use as Majestic Agents and soldiers take more concentration to extract their brain stems. Forget the concentration meter and use the Anal Probe Gun. To aim, use the Right Analog-stick and place it over a human. Then, hold R1 to charge up the Anal Probe Gun. Release R1 to fire at the selected target. One shot is all that is needed to take down some humans, but others may require more. However, you have infinite energy with the weapon.



Better DNA value

Every chance you get, do not kill a human before you extract their brain stem. Extract their brain stem first as it will make the DNA worth more (25 instead of 10). The easiest humans to do this to are the scientists in the level with glowing cows. For some reason, if the person that is important to you dies (the person you need to abduct), extract their brain stem before you return to the Mothership -- the DNA is usually worth more. Additionally, it is rare to find humans with brain stems that are worth 50 or 100 DNA. Most humans have brain stems that are only worth 10 or 25 DNA. If you walk around Union Town, there will be humans with signs on them reading, "REPENT THE END IS NEAR". Those humans will have a brain stem worth 50 DNA. Also, Mystery Agents' brain stems are worth 25 DNA points most of the time, whether dead or not. The Psi G-Men are worth 150 DNA alive and 75 DNA dead.



After you complete the game all brain stems will be worth more when you use the anal probe:



Citizen from 10 to 15

Cops from 25 to 40

Repent Men (Union City) 50 to 75

Army from 25 to 40

G-Men from 50 to 75

When Pox has you take out the President, just run up, extract his brain, and take it to get 200 DNA; this is the most you can get from a single human. To get more DNA from humans, first use Hypno on them. For example, using Hypno on a town crazy (the one with the sign) can result in 200 DNA. To probe a Majestic Agent, cycle to your anal probe and charge it. Then, shoot the agent. Do this three times and the agent's brain will come out; it is worth 75 DNA each time.



Staying human

After getting out of your UFO, aim at a human and press Circle. When you have changed into the human, the bar on the top left corner of the screen will go down. When it is all gone, you will change back into an alien. If you want to remain human, turn into a human and while walking around, scan other humans or animals to make the bar on the top left corner stay up. Additionally, turn into a human then enable the "Ammo-A-Plenty" code. You will stay human forever. You do not have to scan thoughts to get out of the human body -- just press Circle.



HoloBob

Put your target (dot in the middle of the screen) on any human, and press Circle. In order to maintain your HoloBob, you must read the thoughts of the humans walking around. You can read the same person's thoughts repeatedly to keep your mental powers charged.



Alert levels

There are four basic icons for the awareness levels at the top of the screen. The first one indicates that civilians are aware of your presence and its color is purple. The second one indicates when the police are sent to investigate, and are on the scene with a yellow car symbol. The third one is a big orange star, which indicates that the military are involved. The fourth one is Majestic, a top secret government agency which has the power of seeing through your disguise and bringing you down with high tech weaponry. When you alerted to the police and the military (the orange star and the yellow police car) you can disguise yourself as a soldier for the military alert level or a policeman disguise for the police alert level. You can just use a normal civilian disguise for the first icon. You can also find hiding places or use your Jetpack to escape. For the Majestic alert, disguise yourself as one of them, but do not get too close or your disguise will deactivate, revealing your alien form. The Majestic symbol is a big red M. Keep moving when you fight them and look for out men in black with big green guns.



Get on Santa Modesta tower

To get on top of the Santa Modesta's SMCBS TV station towers, first get on top of the station's roof. Then, jump onto the satellite dish and from there, to the slim post. Once on the post, jump and use the "Extra jetpack distance" trick to reach tower 2. From tower 2 you can also go to the other tower. From that altitude the police, army, and Majestic cannot see you. Use the Ion Detonator to blow them up. This is best done when aiming down before jumping; you can then see where you are landing.



Ride the Washington Monument

Find the monument, then throw cars at it until it breaks into two pieces. Get on the long pointy piece, PK the middle, and try to stay on.



Lower brain juice meter

When you are in the form of another person, to make you brain juice meter go down, read other people's thoughts.



Get a lift

Enable the "Bulletproof Crypto" code, then get on top of a car (military trucks and tanks work best). Aim your Ion Detonator at the vehicle. Detonate it and you will be shot into the air. You can use your jetpack to fly away.



Radio towers

When you have to defend the radio towers, you will get to use the atomic blast in your space ship. However, be very careful, because if you shoot too close to the towers it will bring down their health even more.



Destroying Majestic cars

Use your PK ability on a Majestic limo; hold L1 the whole time. Get a wall between you and the car, then start running away from the wall until the car smashes into it. Keep running backwards and the car will eventually explode. This trick can also be used to take out normal cars and people.



Levitation death

It you levitate a person for a long time, they will die.



Moonwalk

Stand in an open area on any level and walk forward. Keep decreasing your speed until you eventually begin walking in place.



Extra robot arm

When done with a mission at Capital City, enable the "Deep Thinker" and "Bulletproof Crypto" codes. Then, go to the bridge that goes to the octagon. Attack the people to get the robots to attack you. Use the mind control on the robots and lay them about over the edge. You can see a robot arm pulling the robot into the water.



Flowers For Algernon reference

If you scan a Psi-Mutant a few times, he will say "Algernon... Good mouse... Smarter... than... Charley". The Psi-Mutant is thinking about the book, "Flowers For Algernon".



Pinky And The Brain reference

In the final mission, scan Silhouette's mind. Eventually she will think "What was I doing? Oh yeah. The same thing I do every night. Try to take over the world!".



Plan 9 From Outer Space reference

Halfway through the game you will experience a level where you go to the drive-in to switch films with the one that is showing. Watch what is showing before you switch films to see that the film is Edward D. Wood, Jr.'s Plan 9 From Outer Space.



Village People reference

Scan a cop in the Santa Modesta area and you will eventually hear, "If only I had a cowboy, an Indian, and a construction worker."