Enter these codes at the password select screen
Ignore the bad password message

Subpen Area..........ABEMJQLNVTPG
Russian Embassy.........OGLIESHVIRLL
KGB Warehouse..........OQRFFSITJMNI
KGB Headquarters..........EHNJHSURWJMP
Security Hallway..........GDPSISJOWUAN
Underground Sewage Plant..........GGHIHSJVWRML
Security Hallway..........GDPSISJOWUAN
KGB Headquarters..........IGCJMJMVMRBL
Russian Embassy..........IQDSNJNTOMCI
IMF Headquarters..........IJENMUNHONCJ
IMF Headquarters..........IMQPNHNKOSCM
Infirmary..........PBFROUOPPWDB
CIA Rooftop.........PMGKPUPKQSDM
CIA Mainframe Computer..........PGJNOUPHQNDJ
CIA Rooftop..........KEJPPUPSRKEE
Waterloo Station..........HDGGFPKQMOBC
Train..........IGILGPMLMYBO
Train..........HDGOFTKQMOBC
Train Roof..........IGJDGTMLMYBO
Lundkvist Base..........NGHSMGQTXMGI
Tunnel..........MOEEOJGHVXJH
Mainland..........MKEHTJSSVVJD
Gunboat..........AFQMOJQPVTPG

Find the Score for the Pianist

This code is for when you are on the second level in the embassy of Prague. To find the score that the pianist is looking for go from the bar room into the coridor with pictures. Take a left and go all the way down to where a man and a women are standing up talking. Behind one of them is a music symbol. Just pick it up and proceed to give it back to the pianist.

Developer notes

Go to passwords and enter "TTOPFSECRETT" as a password. It will say, "Bad Password" but the code will be activated

Disable AI

Go to passwords and enter "SCAREDSTIFF" as a password. It will say, "Bad Password" but the code will be activated

Slow motion

Go to passwords and enter "IMTIREDTODAY" as a password. It will say, "Bad Password" but the code will be activated

Mega jumps

Go to passwords and enter "BIONICJUMPER" as a password. It will say, "Bad Password" but the code will be activated

Programmer message

Choose the "Load Game" option, then enter TTOPFSECRETT as a password. Ignore the "Bad Password" message. 

Turbo mode

Go to passwords and enter "GOOUTTAMYWAY" as a password. It will say, "Bad Password" but the code will be activated

View FMV sequences

Go to passwords and enter "SEECOOLMOVIE" It will say, "Bad Password" but the code will be activated