Corban was more than prepared to defend against lead, magic, or both; the man's gun was unholstered since before they even traded words. Given Corban was below him, and the stalagtite well above them both, he was not surprised nor fooled, given the man's aiming arm was a dead giveaway. Two steps back would end with the stalagtite becoming a stalagmite as it bit into the soft cavern floor that Corban previously occupied, creating a natural, thin wall between them. 

[I]Hmm. He seems to play by the book; distract and strafe, more than likely to follow-up fire.[/i] Corban would be prepared if he did. From behind his stony cover, he envisioned the man's trajectory in his minds eye. His visor mapped his enemies speed and direction to a clean grid. With some mathematical know-how, He'd be able to track his movement even if he couldn't see him.

The high number of stalagtites and flowstones implied high moisture and a primary base of limestone. How convenient for Corban! He may as well have been fighting in a makeshift chemistry lab, what with all this raw material. Clenching his hand into a fist, large masses of rapidly solidifying water imploded toward Thomas. The composition of the cave meant the water impurity by other materials was rather high, so transmuting the components away from one another to leave only the solid matter and speed up the 'deposit' process was simple. Before he knew it, Thomas would be shishkabobbed by at least ten water-turned-stone-spikes.

[Hider]Edited post for grammar. 
Improved flow.[/hider]