I've finally found the manual of Time Bandit. The project was in standby because I needed the exact background story to write the story line of new levels. See my recent posts on "atari-forum". A link to the manual is there too. Blake Patterson (a great fan of time bandit) has scanned it. Thanks him!
This project is now my main priority. I'll get in touch with you as soon as the levels are playable to beta test Blake will help us too.