Permanently improve the chance that future gear drops have higher quality.
PC / Global, base game and installed DLC routes labeled
WHERE & HOW TO FARM
Where to farm
Legendary Forge at the end of a Boss Rush trial.
The Legendary Forge converts cells into lasting improvements to the quality of gear drops. In Boss Rush, this is a practical end-of-run destination for cells earned from bosses. Higher-quality drops can support future runs, but the Forge is an investment rather than an immediate weapon reward. Plan to spend before leaving the mode because its cells do not carry over.
Choose a Boss Rush trial you can complete consistently.
Fight through the bosses and collect their cell drops.
At the end, approach the Legendary Forge before exiting.
Review the next available Forge upgrade and its cell cost.
Invest the cells you have earned in the Forge’s quality progression.
Confirm the upgrade and verify that the purchase was applied.
Repeat another trial if you want to continue improving future gear quality.
Farming tips
Spend cells at the Forge before leaving Boss Rush; the mode’s currency does not carry outside.
Prioritize Forge investment when improving future drop quality matters more than a specific Collector unlock.
Repeat, collect and use
Repeatable while Forge upgrades remain available. Each purchase permanently improves future gear quality; Boss Rush cells must be spent during that mode run.
Common mistakes
Leaving the mode with cells remaining; they are lost outside Boss Rush.
Expecting the upgrade to produce a guaranteed specific item; it changes the chance of higher-quality drops.
Trying to purchase the next cap without enough cells; complete another suitable trial and return.
When to stop or switch
Stop investing when the available upgrade is purchased or you prefer to direct future cells to a Collector blueprint.
