Rock of Ages

Two castles stand opposed, bridged by an uneven, narrow pathway. One is yours, and you're quite fond of it. See how the parapets catch the sunlight ever so stylishly? The other is your enemy's; they're a jerk, and their crappy crenellations are driving down your property values. Also, their castle sucks, justification enough to try crush it using an enormous rolling stone. Unfortunately, they'll have a chance to plan and build up some security, doing everything they can to derail your razing rock. Get through their defenses and you're one step closer to crushing their unsightly tower (see also: their hopes and dreams). But don't take your turn for granite. Once your turn is over, your opponent's begins...