Cameroon will face Ghana's Group G opponents Germany in a friendly on 1 June in Moenchengladbach before heading to the World Cup finals.
Cameroon will also stage an 11-day training camp in Austria from 20-31 May, playing two friendly games against Macedonia on 26 May and Paraguay three days later.
The Africans suffered a 5-1 loss away to Portugal in a friendly international in Leiria on Wednesday.
Cameroon are in Group A at the World Cup where they will play Mexico, Croatia and hosts Brazil.