Scores:
High score = 10,000 points
Pro Score = 30,000 points
Sick score = 60,000 points
The best way to get a big score in the Foundry is to use the catwalk rails and keep grinding leaping onto the rails below for huge points. Alternatively for some really huge air, use the bowl which opens when you have unjammed the valves.
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Collect Skate:
The only way to find these are to stop and use the right analogue stick to look around. The letters vary depending on which skater you are.
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Un-Jam 5 valves:
Use the map to locate the valves, then grind the small rail above each of them to un-jam them. Hit all 5 and a secret door will open near the start, giving you access to the big bowl.
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Get secret tape:
From the start, head right a little and use the lip to leap up onto the catwalk high above the factory. Ride along the catwalk to the far end and then turn left and stop inside the small room in the centre. Now turn to face the right and quickly move forward, smashing through the glass and leaping across onto the beam hanging from the ceiling. Simply grind across the beam to collect the secret tape.
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(Street Skaters) 50-50 TC's Rail:
From the start, head down the slope ahead and leap over the pipe. Continue to the ramp at the end and pull off an easy air, then return towards the start, heading slightly to the right. There are four rails here and you need to grind the second one from the left to complete this objective. Land on the rail and press triangle without any direction, then balance the grind to the end of the rail to complete this easy objective.
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(Vert Skaters) Cannonball Over the Halfpipe:
Ride straight down the hill infront of you from the start, then hold x to power up your jump. Release on the edge of the pipe and sail over the pipe, holding right and square to pull off the cannonball.
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Grind the molten bucket:
This is probably the most difficult task on this level and can take some time to complete. Follow the route for the secret tape, then drop carefully over the edge of the beam to land a grind on the bucket below. The bucket moves back and forth, so top over the beam and wait for it to rest over the molten metal. As soon as you land on the bucket it will start to rock and all the factory workers will scarper.
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Soak the foreman:
Head right and move to the edge of the factory, then ride down the slope and across the pipe. Skate up the ramp ahead, then slow down when you reach the top and turn to the left. Keep going to the end of the small catwalk, then turn to the right to spot the foreman overseeing the workers. Now grind the rail on the left past the foreman, to start the hook moving and knock him into the water.
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Hope this Helps
Tony Hawk
5-0 Overturn: Right, Left + Triangle
1-2-3-4: Left, Right + Circle
The 900: Right, Down + Circle
Double Kickflip Indy: Left, Down + Square
Steve Caballero
Kickflip Superman: Right, Up + Square
FS 540: Left, Down + Circle
Hang Ten Nosegrind: Down, Up + Triangle
Handstand 360 Handflip: Left, Up + Triangle
Kareem Campell
Ghetto Bird: Up, Right + Square
Kickflip Backflip: Left, Down + Cirlce
Reemo Slide: Down, Left + Triangle
Nosegrind to Pivot: Up, Down + Triangle
Rune Glifberg
Double Kickflip Madonna: Right, Up + Square
Christ Air: Left, Right + Circle
Crail Slide: Right, Down + Triagnle
One Foot Blunt: Left, Right + Triangle
Eric Koston
Fandangle: Up, Right + Triangle
Slamma Jamma: Right, Left + Square
Stalefish Backflip: Down, Right + Square
Pizza Guy: Right, Up + Circle
Bucky Lasek
Big Hitter II: Up, Left + Triangle
Fingerflip Airwalk: Left, Right + Circle
Misty Flip: Right, Down + Circle
FS 540 Heelflip: Left, Down + Square
Bam Margera
540 Tailwhip: Up, Left + Square
The Jackass: Down, Up + Square
Human Dart: Up, Down + Triangle
Russian Boneless: Left, Right + Triangle
Rodney Mullen
Gazelle Underflip: Up, Down + Square
Truckstand: Left, Up + Triangle
Anti-Casper: Right, Left _ Triangle
Handstand Doubleflip: Right, Down + Triangle
Chad Muska
Handstand 50-50: Right, Down + Triangle
BS Nose Comply: Right, Left + Triangle
Tailblock Slide: Left, Down + Triangle
Ghetto Blastin': Down, Up + Triangle
Andrew Reynolds
Dark Disaster: Left, Right + Triangle
Hardflip Lateflip: Left, Right + Square
Noseslide Lipslide: Right, Down + Triangle
Quad Heelflip: Up, Right + Square
Geoff Rowley
Rowley Darkslide: Up, Right + Triangle
Casper Flip 360 Flip: Down, Right + Square
The H Teeth Sweeper: Left, Right + Triangle
Sproing: Up, Down + Triangle
Elissa Steamer
Coffin: Up, Left + Triangle
Primo: Down, Right + Triangle
Bigspin Flip to Tail: Right, Left + Triangle
Judo Madonna: Left, Right + Circle
Jamie Thomas
Crook Bigspin Crook: Right, Down + Triangle
Onewheel Nosemanual: Up, Down + Triangle
360 Handflip: Left, Up + Square
Layback Sparks: Left, Right + Triangle
Darth Maul
Force Grab: Left, Right _ Square
Sith Saber Spin: Left, Right + Triangle
Dark Jedi Grind: Right, Left + Triangle
Wolverine
Claw Punch: Left, Right + Square
Claw Drag: Down, Up + Triangle
The Berzerker: Up, Down + Circle
Officer Dick
Sobriety Grind: Left, Right + Triangle
Lazy Ass Manual: Up, Down + Triangle
Assume the Position: Down, Right + Circle
Priavte Carrera
Handspring Layout: Up, Down + Circle
Ho Ho Sad Planet: Left, Right + Triangle
Ahhh Yeahhh!: Right, Left + Triangle
Ollie the Magic Bum
S.U.I.: Left, Right + Triangle
ZZZZ Manual: Up, Down + Triangle
Pan Handling: Up, Down + Circle
Kelly Slater
Duck Dive Shark Attack: Down, Up + Triangle
Rodeo Clown:Left, Down + Circle
Paddle Out Grind: Left, Right + Triangle
Demoness
AC Air: Right, Left + Circle
The Summoner: Left, Right + Triangle
Visiting Home: Up, Down + Triangle
Neversoft Eyeball
Super Hand Clap: Left, Right + Circle
The best special moves are often grinds and manuals as they are easy to repeat over and over again for huge multipliers. If your revert skills are top notch, then the same can apply for flips and grabs.