Segen
Segen is the last landmark before Fort Istria, so it only matters when your run can still justify the final push.
White Key only matters when your run can still turn Segen into a Fort Istria finish instead of dying one step before Black Key.
White Key is the last real checkpoint before Fort Istria and Black Key. By the time you have it, the chain has already spent time, repairs, and attention across several landmarks. If the Trampler cannot survive one more hard push, White Key is where disciplined teams cash out instead of donating the whole chain to the desert.
White Key is found in the bank-building step at Segen after Red Key. From there, it opens the white-locked door at Fort Istria and leads to Black Key.
Segen is the last landmark before Fort Istria, so it only matters when your run can still justify the final push.
Red Key only deserves space when your run is still strong enough to keep climbing toward White Key instead of extracting profit now.
Black Key is only worth carrying when your run is already strong enough to turn Fort Istria into a Dreadnought vault finish.
Fort Istria is a fixed fort worth routing for Black Key progression and guaranteed NZ Mk2 Energy Rods at each extraction exit.
Black Key is only worth carrying when your run is already strong enough to turn Fort Istria into a Dreadnought vault finish.
Blue Key only pays off when your Kaiserplatz stop was clean enough to justify pushing the chain one landmark deeper.
Dreadnought Key is a separate Storm Dive endgame key, so it only matters when your run can still survive the ship and the extraction after it.
Green Key only matters when you are ready to turn a safe drop into the first real landmark step of the colored chain.
Keys are route commitments, because each useful key only pays off if the crew can still reach its exact box, door, fort, or vault before the run collapses.
Red Key only deserves space when your run is still strong enough to keep climbing toward White Key instead of extracting profit now.
White Key is where the chain stops asking for optimism and starts asking whether Fort Istria can actually be finished alive.
Cash out when the Trampler is hurt, ammo is thin, or the team is already split. Losing the chain here costs more than extracting one step early.
White Key is found in the bank-building step at Segen after Red Key.
It opens the white-locked door at Fort Istria and pushes the run into the Black Key step.