All The Secret Cheats - Tony Hawk's Pro Skater 4
Mar 28th 2005, ID#14002 All The Secret Cheats
Make a new file, then load your file. Go to options and select cheat codes then write watch_me_xplode.
It has to be all in symbols and lower case lettering. Then you will get:
I'm not sure if I listed them all but there is a lot.
Give it a try!