succeeded in the first winter ascent of the Torre Egger in Patagonia with StephanSiegrist [de] and Thomas Senf. In January 2012, Arnold climbed the mixed route
Northwest Face, together with Nina Caprez [fr], Giovanni Quirici and StephanSiegrist [de], and with photographer Rainer Eder. 2010 Sarche (Italy): Lama
mountaineering, including Ai Mori, Adam Ondra, Jérémie Heitz, Jakob Schubert, StephanSiegrist [de] and Nadine Wallner [de] as of 2024. At the same time, the athletes
the Bonatti Pillar in the Mont Blanc massif. In June 2004, he and StephanSiegrist climbed the Eiger, Mönch and Jungfrau within 25 hours. Another success
Alexander and StephanSiegrist 2008 Ascent of Ulvetanna in Queen Maud Land, Antarctica, together with brother Alexander and StephanSiegrist 2009 First free