I hope you enjoy it. I used WinUAE Autofire Rate 1 (thanks again hipoonios), but even then, the game was still very hard. In levels 1 - 3 I quicksaved at the beginning and at the midlevel shops. In levels 4 and 5 I saved one additional time during the levels. I planned to do a perfect run, but later accepted two losses in the final level, since it got too evil.
I also cut out the long loading times bettween the shops and levels, so the video doesn't loose the pace.
Technically, there is still the sound problem I already adressed in the forum. Since nobody could give me an advice, I had to live with it.