King's Ring

The King's Ring is required to unlock the end-game bosses. Three gates are scattered throughout the game, each gate only opens after your character equips the King's Ring. One gate is at Shaded Woods and leads to Aldia's Keep, and therefore the path to obtaining the Ashen Mist Heart. The second gate is at the Forest of Fallen Giants and leads to the arena of the Giant Lord. The third gate is at Drangleic Castle, near the King's Gate bonfire. Equip the ring while exploring Drangleic Castle and statues that would normally animate to attack you would remain passive.

Looking Glass Knight

SL1 Looking Glass Knight, Dark Souls 2: SotFS

This boss is weak against strike damage, i.e. attacks from a hammer such as the Mace. Buff the Raw Mace+10 with Aromatic Ooze or Dark Pine Resin, or use a Mace that has been infused with a Faintstone or Darknight Stone. This fight is a race against time because after a while the boss would summon an NPC phantom to gank you. Playing online means that a player phantom would likely be summoned instead of an NPC. Consume a Brightbug prior to entering the arena. When the boss starts to summon in a phantom, take the opportunity to hit the boss as many times as possible.

After the Looking Glass Knight is defeated, Wellager starts selling the Homunculus Mace for 8,000 souls. Consider using the Homunculus Mace because it has a higher base damage output than the Mace. The Raw Homunculus Mace+10 outputs more damage than either of the Raw Mace+10 and Mace+10. Have at least 144,000 souls to purchase Brightbug x 3 from Melentia.

Shrine of Amana

Estus Flask Shard at Shrine of Amana, Dark Souls 2: SotFS

There are no important loots in this area, except for an Estus Flask Shard. This should be your 13th Estus Flask Shard, but it is a fail-safe item in the sense that you can have at most 12 uses of your Estus Flask. The maximum level of your Estus Flask is 12 Estus Flask+5. Have the (Lightning) Short Bow ready to snipe your way through the area. Take your time to kill most if not all enemies.

Demon of Song

SL1 Demon of Song, Dark Souls 2: SotFS

Use any weapon you are comfortable with and buff it with Aromatic Ooze or Dark Pine Resin. Patiently wait for the boss to expose its face and arms, then attack the arms. Attack the face if you want, but doing so would require you to be very close to the boss.

Undead Crypt

Titanite Chunk at Undead Crypt, Dark Souls 2: SotFS

Bracing Knuckle Ring+2 and Avelyn, Dark Souls 2: SotFS

Fragrant Branch of Yore at Undead Crypt, Dark Souls 2: SotFS

One Titanite Chunk is found near the Undead Ditch bonfire. The Bracing Knuckle Ring+2 is in a room adjacent to where the Titanite Chunk is located. The Avelyn is in an iron chest behind an illusory wall, opposite the hallway where the Nameless Usurper invades you. The Avelyn is recommended for chipping the HP of most enemies. A Fragrant Branch of Yore is found in one of four iron chests in front of the boss arena.

Velstadt, the Royal Aegis

SL1 Velstadt, the Royal Aegis, Dark Souls 2: SotFS

This boss is weak against strike damage and lightning. Buff the Raw Mace+10 with Gold Pine Resin or use a Mace that has been infused with a Boltstone. During phase one, roll through an attack, position your character behind Velstadt, and get in one hit. Phase two is the easier phase because you can bait the attack where Velstadt kneels to shoot projectiles from his weapon. Bait the kneeling attack, run behind Velstadt's back, and get in as many hits as you can.

Defeat Velstadt, exit his arena, and enter an adjacent room where hollowed Vendrick is roaming the room like a zombie. Collect the King's Ring from a nearby corpse. Chloanne now sells Titanite Chunk x 10.