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Dead Cells/Boss Cell progression
Unlock the second Boss Stem Cell — guide illustration
Boss Cell progression

Unlock the second Boss Stem Cell

Advance difficulty progression to reach routes and rewards gated behind two active cells.

PC / Global, base game and installed DLC routes labeled
WHERE & HOW TO FARM

Where to farm

A qualifying final boss route ending at Hand of the King, Queen, or Dracula’s Final Form with one BSC active.

The second Boss Stem Cell is earned by defeating a qualifying final boss while one BSC is active. It raises the difficulty ceiling and makes two-cell routes available, but first you must complete a full eligible run. Do not use an Aspect if the goal is to claim the next BSC. Once earned, activate the new cell manually at the starting tube on a later run.

See farming steps ↓
GET STARTED

How to farm

Before you go

  • Have earned the first BSC and activate it in the starting tube.
  • Reach one of the qualifying final bosses.
  • Do not use an Aspect during the run if pursuing the next BSC.
  1. At the starting tube, select exactly one active Boss Stem Cell.
  2. Choose a route that leads to a qualifying final boss you can defeat.
  3. Collect gear and upgrades while preserving enough health for the final biome.
  4. Reach the selected boss and learn its attack patterns during the fight.
  5. Defeat the boss without an Aspect active.
  6. Claim the newly awarded BSC progression after the victory.
  7. On a later run, return to the starting tube and activate the second cell to access two-BSC routes.

Farming tips

  • The fifth BSC has a different requirement: defeat the Giant with four cells active.
  • Plan the final route around a boss you know rather than taking an unfamiliar branch late in a run.

Repeat, collect and use

This is a one-time unlock. The qualifying victory awards the second BSC; activate it on later runs to use its difficulty and route gates.

Common mistakes

  • Defeating the final boss with no BSC active; set one in the starting tube first.
  • Using an Aspect while pursuing the next BSC; keep Aspects disabled for this unlock attempt.
  • Expecting the new cell to activate automatically; set it in the starting tube on the next run.

When to stop or switch

Stop after the second BSC is awarded and activate it only when you are ready for the higher difficulty.

Sources & fact checks
deadcells.wiki.gg ↗
REWARD DETAILS & CONDITIONS

Sources & rewards

Farming route

Unlock the second Boss Stem Cell

A qualifying final boss route ending at Hand of the King, Queen, or Dracula’s Final Form with one BSC active.

  • Have earned the first BSC and activate it in the starting tube.
  • Reach one of the qualifying final bosses.
  • Do not use an Aspect during the run if pursuing the next BSC.
Rate not listed

Related guides

More guides for gathering materials and making progress.

Find another guide

Keep making progress in Dead Cells.

More boss cell progression ↗All Dead Cells guides ↗