Step 1: First, use the library in the VIP depot.

Step 2: Write to Old Carrier: hi / mission / yes / mission / yes. Take the prize.

Step 3: Repeat the same task as above.

Step 4: Follow the road.

Step 5: The final seal requires a blocker and druids.

Step 6: Collect the rewards.

Step 7: In the portal next to it, you can get a prisoner key to open the door and gain boosted stamina regeneration. Jump over corpses carefully – PZ!