Assayigah was born in Lomé, Togo, and started his training as a performer aged thirteen at the Ecole Expérimentale de Musique (School of Experimental Music) in Lomé. He then went on to study at the famous Ecole des Arts du Spectacle in Paris. After finishing his baccalaureate studies in 1980, Assayigah went on to study Contemporary African Dance and Choreography to degree level with Rose-Marie Guiraud, at her Ecole de Danse et d’Echanges Culturels (School of Dance and Cultural Exchanges) in Abidjan, Ivory Coast, between 1981 and 1985.

Fresh out of university, in 1985, he started his own school, the Ecole de Danse Chorégraphique Assayigah (EDCA - Assayigah School of Choreographic Dance), and performing company, called Ayigafrik.  EDCA became a starting point for numerous Togolese dancers, performers and instructors, many of which now work abroad. The same year, he took the direction of the Ballet National du Togo (Togo National Ballet), with which he performed extensively, and went on to win the Gold Medal in Choreographic Arts at the first Jeux de la Francophonie (Games of the French-Speaking Countries) with his creation “Et la Femme Decouvrit l’Homme” (“And Woman Discovered Man”) in 1989 in Rabat, Morocco.

Between 1989 and 1992, he directed two more critically-acclaimed shows and toured extensively throughout Europe and Africa, before being contracted to run his own show (Tropic Gym) teaching aerobics on the Togolese channel TVT, which he carried on doing until 1999. In 1994, Assayigah received an Honorary Diploma from the Panafrican Congress in Dakar, Senegal for his creation called “Les Refugiés” (“The Refugees”), and won the Premier Prix de Création Chorégraphique (First Prize for Choreographic Creation) for his show called "Martin Luther King". In 1995, Assayigah was formally invited to the second MASA (Marché des Arts et du Spectacle Africains –Market of African Performing Arts) in Abidjan, Ivory Coast, and to a meeting organised by the Conseil International de la Danse (CID – International Dance Council, part of UNESCO), in Libreville, Gabon. In 1998, Assayigah was invited to be part of the jury at the Rencontres de la Creation Chorégraphique Africaine (African Choreographic Creation Meeting) organised by Afrique en Création in Luanda, Angola

Since relocating to the UK in 2000, Assayigah has taught and participated in numerous workshops and community events, involving both children and adults, as well as performed in many venues and festivals. In 2004, he represented the United Kingdom in the International Dance Festival Competition in Seoul, Korea.

Assayigah is a member of the CID (Conseil International de la Danse – International Dance Council), run by the UNESCO, as well as of the Hub Network for African Culture, run by the Arts Council of England.