Smash the Gates is a side quest in The Darkspawn Chronicles DLC for Dragon Age: Origins. It occurs during the main quest Assault on the Palaces. Use the ogre to smash the gate that leads to Fort Drakon.
Once you have enthralled one of the ogres, use it to smash the barricade located to the left of the gated-off stairs. Inside you will find Sergeant Kylon, a Knight, and some innocents. Loot the chest for Ring of the Warrior, and Kylon's corpse for Deadhead Charge. Then use the ogre to smash the gate at the bottom of the stairs to open the way to Fort Drakon.
At the top of the stairs you will find a Steel Golem. In this area (marked as Royal Palace on your map), as long as you keep your troops nearby, dwarven soldiers will continuously spawn from the open doorway. This is an easy way to get maximum approval for your thralls, earning you the Enthralling achievement at this point. After you get the achievement, head right.
Rewards EditRing of the Warrior
This is gold, covered in elven script. Whatever the writing says, it's awfully wordy.
+2 dexterity - Looted from a chest. Deadhead Charge
A north-made brute force channel to the Fade granting the physical resolve that only a lack of sense can bring.
+20 physical resistance
-1 willpower - Dropped by Sergeant Kylon.