As "Wolf", he uses a different deck with Armorknight Cerberus as the Buddy. He mainly focuses on quickly reducing the opponent's life with many attacks, including penetrate attacks with Hysteric Spear while using his Size 1 or lower monsters as fodder for Cerberus' soulguard ability.
After joining Sengoku Academy, Rouga improves his deck with his new Buddy, Armorknight Cerberus "A". He plays a highly aggresive game, using Cerberus A's skills to increase his Weapon's critical in addition to his Armorknight's high stats to deal huge ammounts of damage, in some cases enough to perform an OTK. Because using an item requires an open center area, he uses many support keeping his center open, and if his life is low he brings Armorknight Bahamut to replenish his life and bring a difficult to take down monster.
"The power of the ace will destroy you! Dark Luminize! Ace Defeat!"
In Season 2 Rouga continues to use the same strategy but now has an added focus on attacking more times per turn by using more cards with Double Attack and his new Impact True Ultimate Battle Skill, GIGA Demon Slay. Rouga has a tendency to attack with an Item when taking the first turn which tends to leave him vulneralbe to direct attacks, so he uses cards to replenish his life such as Invigorating Breath and now has more ways to increase his Gauge.