Fast route
Do this in order
- Step 1
Advance the Draculamb storyline until a march is announced.
- Step 2
Check the quest text for the meeting place and time; arrive before the event window begins.
- Step 3
Stay through the full march scene and its closing dialogue instead of leaving as soon as control returns.
Prepare before you start
Do not begin until the related system or story area is unlocked. Keep the achievement condition visible while you play, and save before seasonal or one-night attempts.