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Halovirus

Halovirus

The Superspreader's Kit

Halovirus is always in one of three variant forms. It spreads quietly, fires extra spike volleys and chains outbreaks through crowds of cells.

The Superspreader · Level 8 unlock

Halovirus

Fast and quiet. It fires spike volleys, cycles through three variant forms, and its Superspreader Event turns a crowd of cells into a chain of outbreaks.

  • Role: The Superspreader. Colour: orange
  • Becomes available at level 8, through the Spike Recombination mutation
  • Move speed 205, about 8% faster than the others; same health, damage and fire rate
  • Passive (Asymptomatic): Detection rises 25% slower
  • Passive: every 5th shot also fires a spike volley of 4 extra shots
  • Passive: infected cells pass the infection on and burst when they die
  • Signature (VARIANT): Variant Surge moves to the next form (Swarm, Fury, Ghost) with a 6 s boost, and a smaller boost stays until the next surge
  • Ultimate: Superspreader Event pulls cells into a crowd where every death spreads an outbreak
Compare the playable viruses
The Halovirus surges into its Fury form in the Liver
The Halovirus surges into its Fury form in the Liver
On this page10
  1. Asymptomatic
  2. Spike Volley
  3. Infected Bursts
  4. Variant Surge
  5. Swarm
  6. Fury
  7. Ghost
  8. Superspreader Event
  9. Outbreak Chain
  10. Halovirus Lab branch

The immune system is slow to notice you: Detection rises 25% slower.

  • Asymptomatic Spread (Lab): Detection rises a further 5% slower per level
  • Immune Escape (Lab): a further 15% slower
From the Codex

How aware the host's immune system is of you, from 0 to 100. It's the bar next to the eye at the top of the screen, and the more it fills, the harder the immune system fights back.

Fun fact: Stay out of fights for a few seconds and the bar drains on its own. Refuge rooms drop it fast.

Detection in the Codex

Every few shots, a fan of spike shots flies out on either side of your normal shot.

  • Every 5th shot fires 4 extra shots in a fan, each at 70% damage
  • Swarm form: every 4th shot. Swarm surge: every shot
  • Furin Cleavage (Lab): volleys fire one shot sooner per level (never more often than every 2nd shot)
From the Codex

A fictional virus crowned with a halo of spike proteins that bind receptors on cells in the airways. It spreads before symptoms show, or with none at all.

Fun fact: Real viruses with a crown of spikes are called coronaviruses, from the Latin for crown; the 2003 SARS outbreak was caused by one.

Halovirus in the Codex

Infected cells pass the infection on and burst when they die.

  • A dying infected cell infects every cell within 130
  • It also bursts for 20% of your damage on cells practically touching it
  • Halovirus's infection burns for 80% of your damage per second for 5 s
  • From the Liver on (Difficulty 6 and up in Pandemic Game Mode), each nearby cell shrugs the spread off 25% of the time
From the Codex

Each infected cell releases new virions that go on to infect its neighbours, so an infection can grow exponentially.

Fun fact: A single flu-infected cell can release thousands of new virions within hours.

Viral Spread in the Codex

Variant Surge

Signature · VARIANT

A fitter variant takes over: you move to the next form with a big boost for a few seconds, then keep a smaller boost until the next surge.

  • Fixed order: Swarm, Fury, Ghost, then Swarm again. Runs start in Swarm form, so the first surge brings Fury
  • The big boost lasts 6 s (Variant of Concern Lab: +1 s per level)
  • Doesn't raise Detection
  • The Variant button takes your form's colour; a ring of beads shows the order with your current form on top
From the Codex

A fictional virus crowned with a halo of spike proteins that bind receptors on cells in the airways. It spreads before symptoms show, or with none at all.

Fun fact: Real viruses with a crown of spikes are called coronaviruses, from the Latin for crown; the 2003 SARS outbreak was caused by one.

Halovirus in the Codex

Swarm

Variant form

The spreading variant: spike volleys come far more often.

  • Surge: a spike volley with every shot
  • Form: volleys fire one shot sooner
  • Colour: gold
From the Codex

A fictional virus crowned with a halo of spike proteins that bind receptors on cells in the airways. It spreads before symptoms show, or with none at all.

Fun fact: Real viruses with a crown of spikes are called coronaviruses, from the Latin for crown; the 2003 SARS outbreak was caused by one.

Halovirus in the Codex

Fury

Variant form

The virulent variant: your shots hit much harder.

  • Surge: +60% damage (+65% from the Gut milestone on)
  • Form: +15% damage
  • Colour: red-orange
From the Codex

A fictional virus crowned with a halo of spike proteins that bind receptors on cells in the airways. It spreads before symptoms show, or with none at all.

Fun fact: Real viruses with a crown of spikes are called coronaviruses, from the Latin for crown; the 2003 SARS outbreak was caused by one.

Halovirus in the Codex

Ghost

Variant form

The immune-escape variant: faster, and cells hit you far less.

  • Surge: 50% faster (even past the usual speed cap), and you take 40% less damage
  • Form: 12% faster, and you take 15% less damage
  • Colour: ice blue
From the Codex

A fictional virus crowned with a halo of spike proteins that bind receptors on cells in the airways. It spreads before symptoms show, or with none at all.

Fun fact: Real viruses with a crown of spikes are called coronaviruses, from the Latin for crown; the 2003 SARS outbreak was caused by one.

Halovirus in the Codex

A mass gathering: cells nearby are pulled into one crowd, and each one that dies bursts and spreads it on.

  • Ordinary cells within 300 are pulled into a crowd, always at least 170 away from you (bosses, mini-bosses and Killer T cells stay put)
  • Every cell in reach takes 5x your damage, is infected and stays exposed for 8 s
  • Super-spreading Reach (Lab): +20% radius per level
From the Codex

Each infected cell releases new virions that go on to infect its neighbours, so an infection can grow exponentially.

Fun fact: A single flu-infected cell can release thousands of new virions within hours.

Viral Spread in the Codex

Each exposed cell that dies bursts into an aerosol that hits, infects and exposes its neighbours, so one kill can sweep through the whole crowd.

  • Each aerosol reaches 95 and deals 18% of a cell's max health plus your damage
  • Bosses, mini-bosses and Killer T cells take 2x your damage instead
  • Cells it reaches are exposed for 2 more seconds, so the chain keeps going
  • Long chains are called out: OUTBREAK x2, x5, x10, x15...
  • From the Liver on (Difficulty 6 and up in Pandemic Game Mode), cells resist: an aerosol takes 7% of a cell's max health instead of 18%, and each cell it reaches shrugs it off 75% of the time (no damage, and the chain stops there)
From the Codex

Each infected cell releases new virions that go on to infect its neighbours, so an infection can grow exponentially.

Fun fact: A single flu-infected cell can release thousands of new virions within hours.

Viral Spread in the Codex

Halovirus's own Petri Lab upgrades.

  • Furin Cleavage (2 levels, 1 RNA): spike volleys fire one shot sooner per level
  • Variant of Concern (3 levels): Variant Surge lasts +1 s per level
  • Asymptomatic Spread (3 levels): Detection rises 5% slower per level
  • Super-spreading Reach (3 levels): Superspreader Event radius +20% per level
  • Aerosol Load (3 levels): ultimate charges 15% faster per level
  • Immune Escape (1 level, 3 RNA): Detection rises a further 15% slower
From the Codex

Permanent upgrades. The core ones are shared by every virus; ability and ultimate ones belong to one virus.

Fun fact: Pick an upgrade to see every level and milestone.

Petri Lab in the Codex

See also