The hypno engine supports all the known Wetlands cheats, either using the original approach (using a special "name") or explicitly as game options (so players can select any name they want). Hypno also supports using all the possible cheats in the demos.
Several websites provide the classic cheats, which require to use the following player names:
COOLCOLE: unlock all the available missions
SAVANNAH: infinite amount of energy
ELRAPIDO: infinite amount of rapid fire ammunition
Additionally, hypno supports specific cheats for localized versions, which were recently discovered. These cheats combine all the cheats above in a single one:
FRASCASin the Spanish release.
RITCHYin the French release.
It is unclear if there are any other cheats in any other release (german, korean, etc).