Having chased Dark Pit to this secluded mountaintop, a duel of wits and skill is inevitable. Following Underworld troops, you can find where Dark Pit has holed up and engage him in combat. Take a look at the map below and note how from the central hub, there are four distinct locations to visit. Within those areas, Dark Pit awaits.
1. This dried-out fountain acts as the central hub for the whole map. From here you can watch to see where Underworld troops are headed, and then follow them to Dark Pit’s location. After enough successful battles against Dark Pit, Palutena will tell you to return to this location and will create a grind rail for you to chase the copy down one last time.
2. The underground chambers of a forgotten temple is one of dueling locations. It’s a dark place with many pillars that can be used as cover. This can be a tough battle, if only for the fact that Dark Pit uses a powerful club weapon. Watch out for the massive energy attacks his club can fire. On any difficulty they can strip a huge amount of health in a single hit.
This area is especially important, for after the duel, a hidden passage will open in one of the darkened corners of the room, leading to the Zodiac Chamber. Unfortunately, it opens only if you have defeated Dark Pit in this area.
3. This altar is another of the dueling locations. Dark Pit is armed with a cannon for this battle, making long-ranged combat a tough proposition for you. Try to stick close to him for this fight, but always be ready to dodge at a moment’s notice. Even at point-blank range, the cannon is a deadly weapon.
4. This winding mountain path would be the perfect place to set up a long-ranged ambush and that is exactly what Dark Pit does. Standing at the very top of the mountain, armed with a sniping staff weapon, Dark Pit harasses you with constant sniper fire that is both accurate and painful. The whole while, Underworld troops have forgotten their animosity toward the copy and attack Pit during the whole climb.
Partway up the mountain pass, a Merenguy will force you to target him, meaning your back is turned to Dark Pit. Destroy this monster as quickly as possible before Dark Pit can draw a bead on you. Once you get close to him, pound him until he retreats to another location, then use the jump pad that appears for a quick means down the mountain.
5. This open valley has little in the way of cover, but if Dark Pit has fled here, this will be your chance to climb aboard a Cherubot! This mech sports a rapid-fire cannon and a powerful melee attack, meaning it can make short work of any Underworld goons that try to interfere with the duel. As for Dark Pit himself, while he is at a serious firepower disadvantage to the Cherubot, he is still light on his feet. You can destroy the glowing boxes on the field to unleash a massive explosion that can stun the copy and allow you to get closer for melee, or you can keep raining bullets on him from afar.
Once you have beaten him enough times, Palutena will call you back to the central fountain. She has created a grind rail that takes you to the real boss battle.