Surprisingly, Armin was not upset. After coming to accept that he stood no chance to win if Eldrian fought for real, he also finally managed to accept and realize why Eldrian was a hero.
Of course, Eldrian had his 'Hero' title active along with 'Modifier' and 'Master of the basics'. Titles weren't things that were easy to come by, making each one something truly amazing. Yet, knowing that something was amazing and knowing why aren't the same. Armin was now learning why.
Having already gotten a feel for Armin's fighting style, Eldrian switched over to magic from here on. Keeping the centaur at least 2 meters from him at all times. If Armin managed to get closer Eldrian could either strike with his spear or cast another spell while letting his control on one of those he controlled slip a little.