He saw, from a distance, his opponent wriggling his left arm about as he readied his gun in his right. Reacting to the motion of the draw, Daniel dropped down to the ground, stowing his empty gun in his underarm holster as the bullet fired at him flew just above him, missing any fleshy damage but blowing through his ponytail and scraping his cap as it sped past him. 

The mage was casting another spell, he was sure of it. He wouldn't give him another chance. 

Switching hands, he drew his other pistol with his right as he channeled ice into his left arm. As he stood he took aim and fired three more shots at Metz in quick succession; the first was aimed at his center of mass again, the easiest target. The second, affected by recoil, went low and right, speeding towards the mage's left hip. The third, also affected by the recoil of both shots, went high and left, heading for his right shoulder. 

And, along with this, he focused all the ice he'd gathered into his left hand and released it at the platform the mage was standing on. The bolt of ice wasn't aimed at him though, it was aimed at the surface of the platform. The bolt would impact the platform like a snowball would, but the magics contained within would flash freeze an area about twelve feet circular, underneath the mage's feet. If he didn't avoid it his feet would be frozen solid, but if he did the ice would be like an oil slick under his boots, with nary any friction to speak of.