Krzysztof was in the Polish squad when the Polish national team won the gold medal at the European Championship 2009. On September 14, 2009 he was awarded the Order of Polonia Restituta. The Order was conferred on the following day by the Prime Minister of Poland, Donald Tusk. In 2011 he gained three medals with the Polish team – silver at the World Cup, bronze at the European Championship and bronze at the World League in Gdańsk, Poland, where he also won an award for Best Libero. On July 8, 2012, he won a gold medal at the World League 2012 in Sofia, Bulgaria. On September 21, 2014, the Polish national team, including Ignaczak, won the title of World Champion 2014. On October 27, 2014 received a state award granted by the Polish President Bronisław Komorowski – Officer's Cross of Polonia Restituta "for outstanding sports achievements and to promote Polish in the world". After the World Championship, he announced he is retiring from his career in the national team.