Zil & Thungr

Overview
Zil & Thungr is an aggressive duo miniboss found in the 
Thungr attacks with a club in short-range arcs and has two main melee patterns: a regular swing and a delayed swing, both threatening players near him every few seconds. He can also use a rage attack, slamming the club into the ground three times while stepping forward. Zil fights from Thungr’s neck and fires fireballs that inflict Burning, and he can also cast a protective barrier that covers nearby allies and negates up to 100 damage before breaking or expiring. Zil’s barrier can make both bosses effectively invulnerable for a time, so it is usually best to wait for it to fade before committing to an attack.
The most reliable way to defeat them is with ranged weapons such as bows. A common tactic is to shoot arrows or Eitr from the bottom of the spiral staircase, then run up the stairs before Zil & Thungr can reach you, repeating the process until Thungr falls. Once Thungr is dead, Zil is left alone and reverts to the attack pattern of a regular 
- Zil & Thungr are the first duo creatures in Valheim.
- Although they are intended to be fought together, they can be spawned separately because of their internal IDs.
- Zil’s internal ID is GoblinShaman_Hildir.
- Thungr’s internal ID is GoblinBrute_Hildir.
- Zil drops Hildir’s bronze chest.
- Zil can still cast elemental attacks while swimming.
- According to their trophy descriptions, Zil is older than Thungr even though he is smaller.
- The two are described as envying each other: Zil envies Thungr’s strength, while Thungr envies Zil’s magical power.
- The pair may have been inspired by Master Blaster from Mad Max: Beyond Thunderdome.