You can find the Scarlet Halls dungeon within Tirisfal Glades, Eastern Kingdoms.
The coordinates are (82.6,32.9)
When you reach the Training Grounds grab a shield ‘Reinforced Archery Target’ for cover or stand behind someones to avoid push backs. Move forward to absorb the arrows.
1. Houndmaster Braun
/i Throws knifes causing physical damage. Hounds will assist him during fight. At 50% Bloody Rage causes increased damage to players.
2. Armsmaster Harlan
/i Watch out when spins around room, run away from him. Calls Scarlet Defender mobs to aid him in battle. Goes into Berserker Rage at 50% heath, nuke fast.
3. Flameweaver Koegler
/i Avoid the fiery dragon breath, move around room. Fireball Volley & Pyroblast are interruptible.