With this script, you can launch any mission in GTA 3 and complete it.
To do this, in the game you need to press M + L and using num 4 and num 6 select the mission number you need and press num 9 + num 4, after which the mission will start.
For the script to work, you will need the CLEO library for GTA 3, which is in the archive (Author CLEO for GTA 3: Alien).