Yes, there's a way to see all the levels. Create the "Any level, any
 time" registry entry under
 HKEY_CURRENT_USERSoftwareMicroforumSoulTrap. Run SoulTrap and
 click on the "Load Game" button. You should see a game called "Any
 level, any time". Double click on it and you should see all the
 levels.  
 
 [HKEY_CURRENT_USERSoftwareMicroforumSoulTrap]
 
 "Any level, any time"=dword:00000001