Stealth Combat: Advice (Access to all levels)

Access to all levels:
In the game folder there is a “Campaingn” directory in it there is a jared file
Open it with any text editor and find in
it string word: EMA_Missons
after it you will see the lines:
Ema 1 0
Ema 2 0
Ema 3 0
Ema 4 0

and so on, then:

GA Missons:

Ga 1 0
Ga 2 0

etc. Change all 0s to 1s to access them.