De Muijl is among the Age of Empires II players representing Netherlands. De Muijl has 1760 Age of Empires II matches on record. De Muijl's best win rate is 60.4% with Armenians in 53 matches.

The map Land Nomad suits De Muijl well: 59.4% win rate over 69 games. De Muijl performs best in the pocket position, with a 49.1% win rate over 214 matches. In RM Team, De Muijl currently holds a rating of 1109.

De Muijl has a 51.2% win rate in RM Team over 736 games.