Tony Hawk's Underground 2
  
Gamecube





  Ben Franklin:


Beat Boston in story mode.

Call Of Duty guy: 


Beat story mode on sick difficulty.
Graffiti Tagger:


Beat Berlin  in story mode.

Jesse James:


Beat classic mode on sick difficulty.
Jester:


Beat New Orleans in story
mode.
Matador:


Beat Barcelona in story
mode.

Natas Kaupas:


Beat classic mode on sick difficulty.

Nigel:


Beat story mode on sick difficulty.

Paulie:


Go to Options, then Cheats and enter 4wheeler. 

Peds Group A:


Beat story mode on easy difficulty.

Peds Group B:


Beat story mode on normal difficulty.

Peds Group C:


Beat story mode on sick difficulty.
Peds Group D:


Beat classic mode on normal difficulty.

Peds Group E:


Beat classic mode on sick difficulty.

Peds Group F:


Beat 100% of  story mode.

Peds Group G:


Beat 100% of  classic mode.

Peds Group H:


Clear all the gaps on all fifteen levels.

Phil Margera:


Beat story mode on easy difficulty.

Ryan Sheckler:


Beat the Skatopia level in story mode.

Shrek:


Beat story mode on easy difficulty.

Shrimp Vendor:


Beat the Australia level in story
mode.
Steve-O:


Beat classic mode on normal difficulty.

The Hand:


Beat story mode on normal difficulty.

Original 
Tony Hawk:


Beat classic mode on normal difficulty setting.

Pro Skater Level:


Beat story mode.

Triangle Level:


Beat classic mode.
Cheats Movie:


Clear all the gaps in every fifteen level.

Neversoft Skates Movie:


Beat 100% of classic mode.

Pro Bails 1 Movie:


Beat classic mode.

Pro Bails 2 Movie:


Beat 100% of  story mode.

World Destruction Tour Movie:


Beat story mode.
Natas Kaupas: 


Enter "oldskool" at the Cheat menu.

Paulie:


  Enter "4-wheeler" at the Cheat menu.








Thanks to Revolution readers Boy, VoidXXX, QA Master, Michael Bernstein, and Sk8r Da Eye!