Objective: Defeat the Corrupted Bramblekin Alpha.
After activating the rune, a Corrupted Bramblekin Alpha will emerge. This is your first mini-boss. It has a predictable three-hit combo and a charge attack. Dodge its charge and counter-attack immediately after it finishes its combo. If you are a Guardian, block its attacks. Rogues should use their quick dodges to get behind it. Arcanists can kite it with ranged spells. Focus on depleting its health while managing your stamina/mana. Upon defeat, it will drop a 'Whispering Seed' and unlock the path to the Sunken Glade.