Organs & Bosses

Sealed Doors

Every organ

Each organ seals one doorway, usually on the way to the boss, with a mucus plug, a tight junction or a fibrin clot. Carry that organ's gene and it dissolves for good.

Gene Chambers

Every organ

A fight room, often tucked into a dead end, guarded by the organ's key guardian. Win and a glowing helix of foreign DNA appears for you to splice into yourself.

Mucolytic Enzyme

Key gene

Dissolves the mucus plugs sealing the Nasal Passage, Gut and Bone Marrow, and stops mucus from slowing you. Guarded by the Mucin Colossus, Cajal Pacemaker and Giant Osteoclast.

Fusion Peptide

Key gene

Slips through the tight junctions of the Lungs, Liver and Brain, and turns your dash into a weapon that damages every cell you pass through. Guarded by the Syncytium, Polyploid Hepatocyte and Betz Cell.

Plasminogen Activator

Key gene

Dissolves the fibrin clots sealing the Bloodstream and Lymph Node, and stops sticky platelet clots from bogging you down. Guarded by the Fibrin Weaver and Reticular Warden.

Key Guardian Rules

Mini-boss

Key guardians are mini-bosses that get meaner, first Awakened and then Ancient, each time you meet one deeper in the body. Every one throws a hook that reels you in, so watch for the warning line.

Mucin Colossus

Nasal Passage guardian

A living mucus plug guarding the Mucolytic Enzyme, and the gentlest key guardian, the first most players meet. Stay out of its slowing puddles and dash free when it hauls you in.

Syncytium

Lungs guardian

Fused cells with several nuclei in one membrane, guarding the Fusion Peptide. Sidestep its marked lunges, and watch for the fragments it sheds as it weakens, which hunt you.

Fibrin Weaver

Bloodstream guardian

A living clot guarding the Plasminogen Activator. It keeps its distance and circles you while it weaves, ringing you in sticky fibrin clots and calling in Platelets.

Reticular Warden

Lymph Node guardian

A star-shaped Awakened scaffold cell guarding the Plasminogen Activator. It strings a cage of conduit threads around you that pulls shut, so find the open side or dash across.

Cajal Pacemaker

Gut guardian

The gut's Awakened electrical pacemaker, guarding the Mucolytic Enzyme. It sets the whole room contracting, so slip through gaps in the rolling waves and hop between clenching floor strips.

Polyploid Hepatocyte

Liver guardian

A two-nucleus Awakened liver cell guarding the Fusion Peptide. The rings around it turn toxic in turn while one stays safe, and bile lines burst through where you're heading.

Giant Osteoclast

Bone Marrow guardian

A huge Ancient bone-dissolving cell guarding the Mucolytic Enzyme. It burrows out of reach while a crack tracks you, then erupts in a ring of bone shards and leaves a painful pit.

Betz Cell

Brain guardian

A giant Ancient motor neuron guarding the Fusion Peptide. It leaps along flashing lines in a chain, then goes refractory and helpless, which is your moment to hit it hard.

Nerve Endings

Nasal Passage, Lungs

Glowing nerve fibres in the walls that fire a Sneeze or Cough Reflex, flinging you and nearby cells away. Shoot near one instead of standing on it, and the host blames the cells.

Cilia Carpets

Nasal Passage, Lungs

A carpet of beating hairs that carries anything on it the way the arrows point. Dash to cross against the flow, and watch cells get swept into pits.

Air Sacs

Lungs

Alveoli on the walls swell up as a warning, then exhale a gust that blows you and cells away and wipes out enemy shots in its path.

Red Blood Cells

Bloodstream

Solid discs drifting with the pulsing blood flow. They shove you around and soak up shots from both sides, though a few of your shots will burst one.

Reticular Fibres

Lymph Node

Fibres strung across the node that slow you to a crawl while you touch them, and snag cells too. A couple of shots from either side snaps a strand.

Peristalsis

Gut

Every few seconds the gut wall clenches and a wave sweeps the room, carrying everything with it. A flashing band warns you first, so dash through and let it push cells into pits.

Bile Ducts

Liver

Ducts in the walls spray a corrosive jet of bile straight across the room after a flashing warning line. It stings you, but it hits cells far harder.

Stem Cell Niches

Bone Marrow

Pods of young blood cells. Touch or shoot one to burst it and heal, but fresh Neutrophils pour out already hunting you.

Synapses

Brain

Pairs of neurons that fire an electric arc between them after a flickering warning. The arc hits cells far harder than you, and shooting a neuron fires it early.

Abyss Pits

Any organ

Bottomless gaps in the tissue. Falling in is a heavy blow rather than instant death, you can't fall while dashing, and cells shoved in are gone for good.

Drop Shafts

Rare

A rare glowing shaft in an organ's deeper fight rooms. Walk in and the current sweeps you into a freshly shuffled layout, briefly invulnerable, with hunting Killer T cells off your trail.

Mucus Puddles

Nasal Passage

Green puddles of mucus in every Nasal Passage room that slow you down unless you carry the Mucolytic Enzyme. The Mucin Colossus leaves even more behind.

Clots & Scar Tissue

Bloodstream and deeper

Sticky patches left by dying platelets, fibrin attacks, goblet mucus and stellate scarring that bog you right down. The Plasminogen Activator gene makes you immune, and a dying Basophil's heparin clears nearby platelet clots.

Blood Flow

Bloodstream

The current pushes you in pulses that peak on each heartbeat, and red blood cells drift with it. Each room flows its own way, and dashing ignores the push.

Breathing Currents

Lungs

The lungs keep breathing, swaying you gently up and down in a slow rhythm through every room, while air sacs on the walls add sudden gusts on top.

Blood-Brain Barrier

Brain

The brain's shield, announced as you arrive. Every hostile cell in the Brain, the Microglia included, takes reduced damage from you.