Collector cell unlocks from Prisoner’s Quarters

The Collector stands in the passage between biomes, including the first passage after Prisoners’ Quarters.

Before you go

Clear enemies on the route and pick up the cells they leave behind.
Reach the Collector passage and check which blueprints are available and their costs.
Choose one unlock that supports a weapon, skill, mutation, or other progression goal you actually want.
Deposit cells into that blueprint; partial payments count toward its cost.
If you can afford another useful unlock, pay for it before approaching the exit.
Continue the run and repeat the same collection and spending cycle at later Collector stops.
After the blueprint is fully paid, use the item pool in future runs and start saving for another target.

Prioritize a specific unlock instead of scattering small payments across many expensive blueprints.
Treat a passage as a safe spending checkpoint: unspent cells can be lost if the run ends.

Repeatable across normal runs. Each completed blueprint is a one-time unlock; further cell farming funds other unlocks.

Leaving the passage with unspent cells risks losing them on death; spend what you can before exiting.
Paying into a blueprint you do not plan to use slows access to a more useful unlock; inspect costs and choose a concrete target.
Assuming an unlocked blueprint equips itself; it enters the available gear pool, so select it through the normal run options when relevant.

Stop funding the current blueprint once its cost is paid; switch to another Collector unlock or continue the run with a smaller carried balance.

Sources & fact checks

Open a guide to find other locations and see what the item is used for.

Cells and unlocks

Turn cells earned during runs into permanent gear and account progression.