Fire Absorption. Whenever the godslayer is subjected to fire damage, it takes no damage and instead regains a number of hit points equal to the fire damage dealt.

Immutable Form. The godslayer is immune to any spell or effect that would alter its form.

Magic Resistance. The godslayer has advantage on saving throws against spells and other magical effects.

Godslayer weapons. Creatures cannot reduce damage dealt by the godslayer via resistance or immunity.The godslayer has advantage on attack rolls against celestials.

Heart of forge 

Upon first dropping to 0 hp,Fireball is cast centered on the godslayer.The godslayer returns to 8d6 hp.

Multiattack. The godslayer makes a total of 4 attacks Or they can make 2 attacks and use the horde factory action.In addition,they can instead take the horde factory action twice.

Deadly slam Melee Weapon Attack: +16 to hit, reach 15 ft., one target. Hit: 43 (6d10 + 10) Bludgeoning damage.

Guns Ranged Weapon Attack:+11 to hit.Range 120ft,two targets in range.Hit:16(2d10+5) piercing damage and both targets Must make a dc 16 con save or gain a level of exhaustion,As the wounds sap life and become infected.

Explosive barrels  Ranged Weapon Attack:+11 to.Range 60ft,One target.Hit:21(3d10+5) fire damage and 5 (1d0) piercing damage.Every creature within 10ft of the original target must make a dc 24 con or take 10(3d6) fire damage.

Horde factory 

The Godslayer Summons 1d4 swarms of fire drones and 1 Soldier bot.These creatures appear with 10ft of the Godslayer,act on their own intiative and our under the control of the godslayer.

Return Fire

As an a reaction do being attacked,the godslayer can make a single gun attack against the attacker.