About 31 years later after trying for the first time at 10 years old, Jaymanu did finish the game Relief Action by Loriciels released in 1987. You should read the thread on CPCWiki for the informations, pokes and a SNR file to replay his game on WinAPE (put the emulation speed at 400% for less slowness).

There is an article about Relief Action by Sylvestre (french) on his site.