Tony Hawk's Project 8 Codes -

Skate as Travis Barker:
Enter plus44 as a code. Travis Barker will be unlocked in Free Skate mode.

Skate as the Grim Reaper:
Enter enterandwin as a code. The Grim Reaper will be unlocked in Free Skate mode (two players only).

Skate as Jason Lee:
Enter chocolatecoveredpretzel as a code.

Skate as Christian Hosoi:
Enter hohohosoi as a code.

Skate as Kevin Staab:
Enter mixitup as a code.

Skate as Dad and Skater Jam Kid:
Enter strangefellows as a code.

Skate as Photo Girl and Filmer:
Enter themedia as a code.

Skate as Colonel and Security Guard:
Enter militarymen as a code.

Skate as Grim Reaper:
Enter enterandwin as a code.

Skate as nerd and bum:
Enter wearelosers as a code.

Skate as mascot:
Enter manineedadate as a code.

Skate as zombie Officer Dick:
Enter suckstobedead as a code.

Skate as skinny real estate agent:
Enter sellsellsell as a code.

Skate as anchorman:
Enter newshound as a code.

Skate as twin:
Enter badverybad as a code.

Skate as Pat the Realtor:
Enter shescaresme as a code.

All specials unlocked in the shop:
Enter yougotitall as a code to unlock. Note: This does not include decks or pro tricks.

Full stats:
Enter jammypack as a code.

Perfect manual:
Enter allthebest as a code.

Perfect rail:
Enter frontandback as a code.

Unlimited focus:
Enter balancegalore as a code.

Almost all decks:
Enter needaride as a code. All decks except for the Inkblot deck and Gamestop deck will be unlocked and free.

Inkblot deck:
Enter birdhouse as a code.

Vans No Skool Gothic shoes:
Enter hatedandproud as a code.

Full air stats:
Enter drinkup as a code.

Characters:
Complete the indicated task to unlock the corresponding characters.

Bam Margera: Complete all of the goals he assigns to you. 
Bob Burnquist: Complete all of the goals he assigns to you. 
Daewon Song: Complete the goal he assigns you. 
Dustin Dollin: Defeat him as Stevie Williams 
Lyn-Z Adams Hawkins: Defeat her as Nyjah Huston 
Mike Vallely: Complete all of the goals he assigns to you. 
Nyjah Huston: Defeat him as Lyn-Z Adams Hawkins 
Paul Rodriguez: Complete all of the goals he assigns to you. 
Pro Bails 2: Finish the game with 100% completion. 
Rodney Mullen: Complete the goal he assigns you. 
Ryan Sheckler: Complete all of the goals he assigns to you. 
Stevie Williams: Defeat him as Dustin Dollin.