In the first half of the eighties, Andy took part in every tournament in Switzerland and abroad and thus collected such numerous and valuable fight experiences. Thanks to these, he began to understand, that an inner equilibrium was necessary to realize his grand vision and the plans linked to it.
In his milieu, many were astounded at his ability to think and act in an analytical and joined-up manner. Intuitively, he combined his technical ability, theoretical knowledge and information on his opponents and was also able to use or influence the mood of his spectators to his advantage. He was in a position to assess situations immediately and correctly, and to act accordingly.
Andy recorded his first international success in 1981 at the Dutch Kyokushinkai Karate Championships. This way, he drew international attention to himself. However, he attained great admiration two years later, when he took first place at the Europe Cup in Hungary. When observing his fights, spectators recognized even at this time qualities that would typify his style of fighting throughout his whole future career: He hit hard and effectively and employed his feet very accurately. His attacks were often not predictable. He was able to employ his 'high kicks' using both legs at the same time, much to the astonishment of spectators. 'Mawashi Geri' (round kick), 'Ushiro Geri' (backwards kick coming out of a turn') or his spectacular 'Kakato Geri' (Andy Kick) made his style of fighting exciting and attractive. Then at the Europe Cup in Hungary, Andy took part in the world championships for the first time in 1983. Around eighty fighters from all over the world were at the start of the open weight class. Andy was able to battle his way forward until he reached the first sixteen. With that he felt acknowledged: The top world rankings were within his grasp.
Despite his intensive commitment as a competitor, Andy finished his butchery apprenticeship in 1984 and took a job in Wohlen's main wholesale butchery. The many tournaments, for which he had in part to take extra time off, plus the occasional injuries that hindered his work performance, cast a shadow over his working relationship. By 'mutual agreement' it was confirmed two years later that he would be released from his contract and Andy financed his career from then on himself and with some support from his friends.
Well prepared and resolute, he made his way together with the national team to the world championships for the second time in 1987. He came out of every round as the winner. In the semi-final, he ran into the feared Akira Masuda from Japan. To the great astonishment of the spectators and particularly of Mas Oyama, the legendary head of Kyokushinkai, Andy defeated his opponent Masuda in a fight that was so uncompromising that the latter admits even now to having never fought a harder fight.
For the first time in the history of Kyokushinkai, a non-Japanese fighter, Andy, was taking part in the final: His opponent was called Akioshi Matsui, a further determined fighter from Japan. Representatives from all over the world witnessed Andy's great ability to use the unbelievable pressure such a situation creates to his benefit, and to rise above himself. Since both athletes had fought very well to the end, experts argue even today over the real result. In any case, the referees declared Matsui as the winner on points.