How to Beat the Blister Borne in Resident Evil Requiem (RE9)

The Blister Borne is Leon's cyst-covered hulking boss, encountered first in the Care Center Courtyard and again in the East Raccoon City Sewage Facility. Each cyst destruction spawns Blister Heads, making this both a damage race and a crowd-control encounter.

Boss overview: What is a Blister Borne?

The Blister Borne is one of the most visually disturbing enemies in Resident Evil: Requiem — a hulking, slow-moving monstrosity covered in pulsating cysts. Two of them appear during Leon's campaign: the first in the Care Center Courtyard, and the second in the East Raccoon City Sewage Facility.

The first encounter is the harder one because it's your introduction to the mechanic. Once you understand cyst targeting and the Blister Head spawn pattern, the second Blister Borne becomes substantially easier.

The Blister Borne's most dangerous trait isn't its raw damage — it's its ability to mutate nearby zombies and revive corpses into Blister Heads when its cysts rupture. This means the boss fight is also a crowd-control fight.

The cyst system — primary weak points

The Blister Borne has four cysts that function as both health gates and minion spawners:

• 1 cyst on the back — usually exposed when the boss turns to chase you or charges past you
• 3 cysts across the stomach and chest — visible when the boss faces you directly

Each cyst can be destroyed with focused fire. Shotgun blasts at point-blank range pop them in 1-2 shots; precision weapons take 3-4 shots per cyst. Hatchet melee can technically work but isn't worth the risk — being adjacent to the boss when a cyst bursts triggers a Blister Head spawn right next to you.

Combat strategy and ammo routing

// STEP 1 — MAINTAIN MAXIMUM DISTANCE

The Blister Borne moves slowly during normal patrol — Leon can outpace it on foot indefinitely. The danger comes from its unstoppable charge attack, which it telegraphs with a wind-up animation. When you see the charge coming, sprint perpendicular to its path, not away from it. Running directly away keeps you in its damage cone.

// STEP 2 — POP CHEST CYSTS FIRST, ONE AT A TIME

Each cyst burst generates Blister Heads, so you don't want to destroy multiple in rapid succession or you'll be overwhelmed by zombies. Pop one cyst, retreat, clear the resulting Blister Heads, then return for the next cyst.

This staggered approach also gives you ammo recovery time between waves — the Care Center Courtyard arena specifically has multiple supply crates that respawn between phases.

// STEP 3 — USE EXPLOSIVE BLASTS AND THROWN WEAPONS

Grenades, pipe bombs, and any other thrown explosive in your inventory excel here. A single grenade thrown at the chest can rupture 2-3 cysts simultaneously — which spawns 2-3 Blister Heads at once, but it also strips the boss of half its weak points in one action.

If you have an RPG or other heavy weapon from a previous unlock, the Blister Borne is one of the safest places to use it. The chest is a large hit-box; missing is almost impossible.

The Blister Heads — secondary threat

Each ruptured cyst transforms nearby zombies (and revives corpses) into Blister Heads — fast-moving, head-pulsating variants that explode on death and deal significant damage in a small radius.

// CLEARING BLISTER HEADS SAFELY

The wrong way to handle Blister Heads is to melee them — their death explosion will hit you. Instead:

1. Shoot from medium range (5-7 meters) — far enough to avoid the explosion, close enough to land headshots
2. Use Hatchet only as a last resort — and only on Blister Heads that are isolated from other enemies
3. Funnel them through chokepoints — the Care Center Courtyard has natural narrow passages that let you fight them one-by-one rather than in a swarm

// SECONDARY USE: BLISTER HEADS AS WEAPONS

One advanced technique: lure 2-3 Blister Heads toward the Blister Borne itself, then shoot them when they're adjacent. Their explosions damage the boss directly. This requires good positioning but can save significant ammunition.

Rewards and what comes next

Defeating the Blister Borne unlocks:

• Continued story progression to the Orphanage / Raccoon Police Department zone
• Residual loot from the arena — Care Center Courtyard typically holds 3-5 herb spawns and a shotgun shell cache near the eastern exit
• Bestiary completion progress (1 of 2 Blister Borne encounters)

The second Blister Borne in the Sewage Facility uses the exact same mechanic. Once you've mastered cyst-pacing and Blister Head crowd control here, the second one drops in roughly half the time.

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