Boss Rush rewards
Boss Rush Tier 1 weapon and skill drops
Use a contained boss sequence to practice and earn mode-local cells for upgrades.
Boss Rush Tier 1 trial door in Prisoners’ Quarters.
Repeatable as an available trial. Cells are earned and spent within each Boss Rush run; one-time blueprint rewards, if applicable to a mode milestone, do not repeat indefinitely.
Stop once the end-of-run spending is complete; move to a higher tier only when you can finish Tier 1 reliably.
Open a guide to find other locations and see what the item is used for.
Use a contained boss sequence to practice and earn mode-local cells for upgrades.