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Unlockable List
- Crypto phone home: Complete attack of the 50ft president.
- E3 booth footage: Complete attack of the 50ft president.
- Goofy screenshots and voice overs: Complete attack of the 50ft president.
- Art of the Furon movie: Collect all the probes in Santa Modesta
- Blue Book : Saucer Blueprints movie: Collect all the probes in Rockwell
- Evolution of an alien movie: Collect all the probes in Turnipseed Farm
- Face of the enemy movie: Collect all the probes in Area-42
- Pathetic Humans! movie: Collect all the probes in Union Town
- The Concept Barnyard movie: Collect all the probes in Capitol City
- Full-length Teenagers from Outer Space: Finish the game
- Outro movie: Complete attack of the 50ft president.
- Plan 9 from Outer Space clip: Defeat the Teenage Zombies from Outer Space mission
Cheat List
- Ammo-A-Plenty: left, y, white, right, black, x
- Aware Like A Fox: Enter (Full alert meter) RIGHT, X, WHITE, BLACK, RIGHT, WHITE.
- Blind Humans: Enter WHITE, BLACK, RIGHT, LEFT, X, BLACK, WHITE.
- Bulletproof Crypto: Enter X, Y, LEFT, LEFT, Y, X.
- Deep Thinker: Enter BLACK, WHITE, Y, RIGHT, WHITE, Y.
- Mmm... Brains!: Enter (increse DNA) -must be done at the.
- mothership: Enter BLACK, BLACK, WHITE, WHITE, LEFT, RIGHT, LEFT, RIGHT, WHITE, BLACK.
- Nobody Loves You: Enter WHITE, RIGHT, WHITE, BLACK, X, RIGHT.
All unverified.
Hint - Fast DNA Accrument
Gathering DNA to buy weapons and upgrades can be a bit boring (lets face it, we ALL want the bigger guns), so a quick easy solution is to revisit Turnipseed farm, go to the challenge called "Kill farmers". Each time you complete the challenge you get a healthy DNA reward (it increases each time as the quota increases). The first time you only need to destroy 6 farmers, but after you have done it a good few times it becomes 20 in 1 min 30 secs with a massive 300 DNA reward, so buying upgrades is very easy if you repeatedly complete this quick easy challenge.
The challenge is located near the famers field a short walk from the farmhouse you start the game near. If you where standing on the farmhouse porch looking at the field with cows in, head left past the trees (the lake will be on your right at this time) and just keep going forward (you should also see a beam of yellow light touching the sky, this is the challenge). The challenge is easy done with the disintegrator ray, mine was fully loaded with triple shot by this time so 1 shot per farmer did the trick.
Once you have completed the challenge and received your 300 DNA bonus, go to the yellow light and start the challenge again, keep doing this till your outta ammo, then re-visit the hangar, and go back to the Turnipseed Farm to get ammo (by re-visiting) and DNA from the challenge.
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