Type one of these codes during a combat or a puzzle
and the puzzle you're in will be completed
(or the combat you're in will be won).
Note: All these codes have been tested with difficulty
setting 'medium', but I'm sure they will also work
with the other difficulty settings.
Puzzle in Catherine's Appartment :PISCES
Catherine's Well :ARCADE
Falcon Eddie's Well :PARADISE
Catherine's Brain :CAFFEINE
Web Runners' Well :ZZTOP
Dr. Burton's Secret Lab :SPARKY
Falcon Eddie's Secret Well (Puzzle) :HEADACHE
Falcon Eddie's Secret Well (Book) :SPONGE
Weapon 1 Well :ASPIRIN
Anti-Viral Well :PRETZEL
Some other codes:
You'll have to find for yourself which puzzle/combat
these codes are for (sorry, I don't remember). I think
there are other codes, but I haven't found them yet.