Representing France, Arnionst is active in the Age of Empires II scene. Across all ladders, Arnionst has played 15 matches. Arnionst has chosen to skip ranked play, focusing on other game modes.

Lithuanians is the go-to civilization for Arnionst, making up 46.7% of their picks. A 50.0% win rate in the pocket role over 6 games is Arnionst's best.