Thief 2: The Metal Age Cheats

Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "dark.cfg" file in the game directory. Change the value after the "cash_bonus" entry to increase the amount of additional money available at the start of each level.

Save the game immediately before completing a mission.
Complete the mission as usual, and save the game in a different
save position. Reload save that was made before the mission was
completed. Complete the mission again. The statistics screen will
combine the money from both missions. Repeat this to earn as much
as needed.

In life of the party , you don't need a key to get into the armory. All you have to do is shoot two fire arrows at it and it will open.

Note: This procedure involves editing a game file; create a
backup copy of the file before proceeding. Use a text editor
to edit the "user.cfg" file in the game directory.
Enter "cheats_active" on a new line, the enter one or more
the following lines after it.
FailOnSee
FailOnKO
FailOnKill Each mission will be easier to fail.