Tony Hawk's Project 8 Cheats

Passwords
Enter in the cheats menu:

needaride: All decks except for the Inkblot deck and Gamestop deck will be unlocked and free.
yougotitall: All specials unlocked in the shop
drinkup: Full Air Stats
birdhouse: Inkblot deck
newshound: Skate as Anchorman
hohohosoi: Skate as Christian Hosoi
militarymen: Skate as Colonel and Security Guard
strangefellows: Skate as Dad and Skater Jam Kid
notmono: Skate as Jason Lee
mixitup: Skate as Kevin Staab
manineedadate: Skate as Mascot
wearelosers: Skate as Nerd and Bum
shescaresme: Skate as Pat the Realtor
themedia: Skate as Photo Girl and Filmer
enterandwin: Skate as the Grim Reaper
plus44: Skate as Travis Barker
badverybad: Skate as Twin
suckstobedead: Skate as Zombie Officer Dick
hatedandproud: Vans No Skool Gothic shoes

Achievements
Complete each achievement to get the allotted gamerscore:

100 Games Online (20): Finish 100 games online.
50 Games Online (15): Finish 50 games online.
All Pro Challenges Completed (20): You did everything the pro's challenged you to do.
Beat a Developer (50): Win a skate session against a member of the Project 8 development team, or someone who already has.
Break 15 Bones in One Bail (10): Break 15 bones in one bail. Man that hurts.
Burnquist Pro Challenge (10): Find Bob and beat his challenge.
Capitol Classic Beaten at Sick (15): Capitol Classic beaten at sick.
Factory Classic Beaten at Sick (15): Amazing. You got sick on the Factory classic goal.
Factory Unlocked (10): Unlocked the Factory.
First Sick Goal (5): Congratulations, you completed a goal at Sick difficulty.
Full Stats (50): You got every stat maxed. How long did that take you?
Fun Park Classic Beaten at Sick (15): Amazing. You got sick on the Fun Park classic goal.
Funpark Unlocked (10): Unlocked the Funpark.
Hang Time (20): 14,000 seconds of air time.
Hit 50% of the Gaps (20): 50 percent of the gaps found.
Hit all of the Gaps (35): You've skated the world and found every gap. Congratulations.
Main St Classic Beaten at Sick (15): Amazing. You got sick on the Main St classic goal.
Manual Master (20): You've manualed for 140,000 feet!
Margera Pro Challenge (10): Find Bam and beat his challenge.
Mullen Pro Challenge (10): Find Rodney and beat his challenge.
Nice combo! (20): Well done, you landed over 500,000 point combo.
Nyjah & Lyn-Z Pro Challenge (10): Find Nyjah and Lyn-Z and beat the challenge.
Outta the Houses (10): You escaped the suburban life, explore the world.
Played Xbox Live (10): Play an online game.
Ranked Number 1! (100): You are the number one skater on Project 8.
Rod Pro Challenge (10): Find P-Rod and beat his challenge.
School Classic Beaten at Sick (15): Amazing. You got sick on the School classic goal.
School Unlocked (10): Unlocked the School.
Scored over 1,000,000 points! (10): Scored over 1,000,000 points.
Secret Area Found (5): You found your first secret area. Don't tell anyone.
Sheckler Pro Challenge (10): Find Ryan and beat his challenge.
Sick Chalk Challenges (30): Incredible, you beat all the goals at SICK difficulty.
Sick Classic Goals (30): All classic goals at Sick? That's amazing.
Skate Classic Beaten at Sick (15): Amazing. You got sick on the Skate Park classic goal.
Skate Park Unlocked (10): Unlocked the Skate Park.
Slums Classic Beaten at Sick (15): Amazing. You got sick on the Slums classic goal.
Slums Unlocked (10): Unlocked the Slums.
Song Pro Challenge (10): Find Daewon and beat his challenge.
Suburbia Classic Beaten at Sick (15): Amazing. You got sick on the Suburbia classic goal.
The Daily Grind (20): You've managed to grind for 140,000 total feet.
Training Complete (10): You completed the training, go put what you learned into practice.
Vallely Pro Challenge (10): Find Mike V and beat his challenge.
Williams & Dollin Pro Challenge (10): Find Stevie and Dustin and beat the challenge.
You Made it Into Project 8 (50): Congratulations, you cracked the top 8.
You Made it to Spot 4! (75): Congratulations, you cracked the top 4