Durgo seethed until he heard the voice of the giant. Then he grew very still. Slowly, his head swiveled until he could see it in the corner of his eye, challenging him. His lips part in a wicked smile made all the more menacing by his yellow teeth and scarred face.
While known for being a powerful and fearsome foe, the ogre could rarely be named an honorable one. Reaching into his belt pouch, he withdraws a tiny (by ogrish standards) vial and pours its contents onto his tongue. A silvery liquid beings to ooze down his body from the top of his head, coalescing at his mud-encrusted boots. As it does, the ogre disappears. All that remains is his dark, low chuckle echoing down the endless hall.
OOC: Drinking the potion of invisibility and waiting. Durgo's next action is to charge down the hall and lay into the giant with everything he's got: Full PA + RA + Charge Attack: +14 (2d6+57) (AC drops to 17), moving right up onto the giant- reach be damned.