Blue Key
Blue Key only pays off when your Kaiserplatz stop was clean enough to justify pushing the chain one landmark deeper.
Meere Sauge is the point where the colored chain starts getting expensive enough to punish greed.
Meere Sauge matters because this is where Blue Key has to justify itself. Red Key comes out of the stop, but the bigger decision is whether the chain still pays more than a safe extraction. If the Trampler is already stretched, Meere Sauge is where a clean exit usually beats one more landmark gamble.
Meere Sauge is a fixed Settlement landmark on Sophie at X 24.50 and Z -162.10. It is the landmark tied to the Blue Key step and the Red Key follow-up.
Blue Key only pays off when your Kaiserplatz stop was clean enough to justify pushing the chain one landmark deeper.
Red Key only deserves space when your run is still strong enough to keep climbing toward White Key instead of extracting profit now.
Dreadnought is the end of the colored-key chain, a late high-tier payoff stop where Black Key turns into the black vault run.
Evacuation Zone is the place where your run stops being loot theory and becomes a real extraction commitment.
Fort Istria is a fixed fort worth routing for Black Key progression and guaranteed NZ Mk2 Energy Rods at each extraction exit.
Kaiserplatz is the landmark that turns a loose Green Key into Blue Key progress, so it only pays when your run can survive the whole key chain.
Radio Tower is the object that turns an exit option into a real extraction gamble, so timing matters more than bravery here.
Segen is the last landmark before Fort Istria, so it only matters when your run can still justify the final push.
Meere Sauge is where the route stops feeling like lucky chain progress and starts feeling like a cost that has to justify itself.
The Trampler usually reaches Meere Sauge after already spending time and resources at Kaiserplatz. If control is loose here, the White Key push often never happens.
This is the stop where Blue Key either turns into real Red Key progress or proves the chain has already gone deep enough.
It matters because this is usually where teams decide whether the Red Key step is still worth it or whether the smarter money is to leave.