Invincibility:
Pause the game, then hold L and press X, Y, Left(2), Y, X.
Infinite ammunition:
Pause the game, then hold L and press Left, Y, White, Right, Black, X.
Infinite mind:
Pause the game, then hold L and press Black, White, Y, Right, White, Y. Your MC meter will not decrease. Note: Your current MC must be above zero for this code to have any effect.
All upgrades:
Pause the game while on the Mothership, then hold L and press X, Y, Left(2), Y, X. All upgrades for the currently unlocked weapons will be available for purchase from Pox's lab.
Hints
Faster Destruction in the UFO:
Instead of holding R to destroy buildings or large objects, tap R and the destruction will happen faster without waiting for the recharge.
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 A to boost away.
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.
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.
Staying human:
After getting out of your UFO, aim at a human and press Y. 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.
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.
Amounts of DNA per Authority:
Make sure you don't blow up the person that you want to brain extract (Best things to use would be the ZAP-O-MATIC and once their dead lock on with L and hold B to extract brain, or you can use the Anal Probe to imediatly extract the persons brain.
Normal Citizens - usually 10 DNA but rarely 25 DNA
Farmers with shotguns - 25 DNA but sometimes 10 DNA
Cops - 25 DNA
Soliders - 25 DNA
Majestic - 50 DNA
Longer HoloBoB:
To stay in HoloBoB for longer than normal, just keep reading people's minds
All 1st level probes:
(Note that as far as I know this works only for a demo version I have and may not work for the full game.)
1.The first probe is pretty obvious. Start going up the road towards the town where there is a small market stall. There is a probe next to it.
2.Second, go the cinema advertisement for "Plan 9 from outer space". There is a probe behind it.
3.Following from where the second probe is, carry on down the narrow stretch of land. The third probe is among the trees.
4.Go to the main house where the "pathetic humans" live. There is yet another probe behind the house.
5.Probe number 5 is behind the boathouse next to the cow paddock
6.Move towards the limits of the level (the limits near the boathouse)where Orthropox tells you that you can't leave. A probe is next to a rock towards the left.
7.Number 7 is behind the big red barn.
8.After the previous probe, carry on down the narrow path behind the bern. After a short walk you will find number 9.
9.At the other end of the farm, there is a small cornfield. Behind that small barn is one of those infamous little devices we call "anal probes"(Note that this is no different from another probe. I just threw that gibberish in for effect.)
10.This can take a while to find. Behind where your saucer landed, there is a small clearing. At the back of this is probe number 10!
