Use the terrain? Of course. His instructors would have smacked him upside the head for forgetting such a basic principle!

"Domino, Blaze, work together! Wild Charge and Flare Blitz-- use them to take down these pillars!" Jean could only hope they weren't load bearing... "Max, use Rock Climb to get up as high as you can! Try to hit it on the back of the neck, it's the natural weak spot!"

All three of his Pokemon dashed out as ordered like soldiers on the battlefield. They were obviously well trained to his call.