Boss materials turn a cleared encounter into a specialized weapon or mod, giving each successful boss run a concrete crafting goal.
PC / Global, base game; Swamps of Corsus and Subject 2923 content labeled
WHERE & HOW TO FARM
Where to farm
McCabe’s workshop in Ward 13, after a boss encounter in Campaign or Adventure Mode.
A boss reward is only the first part of the process: bring its unique material back to Ward 13 and use McCabe’s workshop to make the associated weapon or mod. Lumenite and Scrap may also be required, so check the recipe before spending materials elsewhere.
Defeat a boss that awards a material used in a weapon or mod recipe.
Have access to Ward 13 and McCabe’s workshop.
Gather the recipe’s displayed Lumenite and Scrap costs.
Before pursuing a boss, open McCabe’s crafting list and identify the reward you want.
Check whether the recipe calls for a particular boss material or an alternate-kill material.
Use Campaign or roll the relevant world in Adventure Mode to find that encounter.
Defeat the boss using the condition that awards the required material.
Collect the material from the encounter reward and return to Ward 13.
Speak to McCabe and compare the available weapon and mod recipes against your intended build.
Craft the desired item when you have all listed materials.
Farming tips
Read the full recipe before the fight; a normal victory may not yield an alternate reward material.
Save enough Lumenite for the chosen craft rather than assuming the boss material is the only cost.
Repeat, collect and use
Boss materials are earned from encounters, so repeat the relevant boss through a new Campaign or Adventure roll if you need another reward and the encounter can be rolled again.
Common mistakes
Assuming every boss material crafts a weapon: check McCabe’s recipe list because some materials correspond to mods or alternate rewards.
Spending the required Lumenite first: check and reserve the displayed cost before crafting other items.
Killing the boss without its alternate condition: identify the desired recipe’s specific material before entering the fight.
When to stop or switch
Stop when the intended boss weapon or mod is crafted; switch to a different boss or material farm if the recipe is complete.
