Rat King build guide
by LȊGHTBRINGERVersion 6Updated Oct 6, 2026Guide #839878
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As written by the author · latest version · not affected by filters
rats, we're rats, we're the rats. we prey at night we stalk at night, we're the rats!
1Early game
Game stage · 6 items
High-Velocity Rounds
Monster Rounds
Extended Magazine
Extra Health
Sprint Boots
Cultist Sacrifice
Built from Monster Rounds
2utiloptional
Author's category · 2 items
Mystic Expansion
Slowing Hex
3burgerboxoptional
Author's category · 3 items
Close Quarters
Extra Regen
Rebuttal
4gun
Author's category · 8 items
Fleetfoot
Opening Rounds
Built from High-Velocity Rounds
Recharging Rush
5vitality
Author's category · 8 items
Enduring Speed
Built from Sprint Boots
Debuff Reducer
Return Fire
6spirit
Author's category · 6 items
Compress Cooldown
Bullet Resist Shredder
Suppressor
7Late buys
Author's category · 9 items
Siphon Bullets
Inhibitor
Juggernaut
Built from Enduring Speed
8chungus
Author's category · 10 items
Counterspell
Warp Stone
Veil Walker
Categories appear in the author's order. Only the editor's default Early, Mid and Late sections are marked as game stages; the author's own categories keep their names. “Built from” links come from the game's item recipes.
| Scrap Grenade: Ability unlocked, step 1 | Scrap Grenade: 1 AP upgrade, step 5 | Scrap Grenade: 2 AP upgrade, step 6 |
Intensifying Magazine
Escalating Resilience
Built from Extended Magazine
Ballistic Enchantment
Built from Mystic Expansion
Berserker
Blood Tribute
Bullet Lifesteal
Fortitude
Built from Extra Health
Dispel Magic
Spirit Resilience
Fury Trance
Built from Bullet Lifesteal
Superior Cooldown
Built from Compress Cooldown
Greater Expansion
Built from Mystic Expansion
Superior Duration
Colossus
Built from Extra Health
Unstoppable
Built from Debuff Reducer
Silencer
Frenzy
Crippling Headshot
Scourge
Witchmail
Divine Barrier
Spellbreaker
Built from Debuff Reducer
Plated Armor
Ethereal Shift
Slowing Bullets
Weighted Shots
Built from Slowing Bullets
| Scrap Grenade: 5 AP upgrade, step 16 |
| Rat Swarm: Ability unlocked, step 2 | Rat Swarm: 1 AP upgrade, step 9 | Rat Swarm: 2 AP upgrade, step 10 | Rat Swarm: 5 AP upgrade, step 11 |
| Royal Pestments: Ability unlocked, step 3 | Royal Pestments: 1 AP upgrade, step 7 | Royal Pestments: 2 AP upgrade, step 8 | Royal Pestments: 5 AP upgrade, step 15 |
| Rule, Ratannia!: Ability unlocked, step 4 | Rule, Ratannia!: 1 AP upgrade, step 12 | Rule, Ratannia!: 2 AP upgrade, step 13 | Rule, Ratannia!: 5 AP upgrade, step 14 |
Unlock1 / 2 / 5 AP upgrade costOrder only; no timings
Current patch: the Oct 5, 2026 update, Oct 5, 2026, 11:05 PM UTC to today · ranked and unranked · all match average ranks
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