The Seeker is a small, agile ship with limited room for parts and slots that favor melee damage in the demo. That makes efficient placement more important than simply collecting every rare part.
How to unlock Seeker
Demo footage says the Seeker becomes available after beating the Periphery. Full-release progression may adjust this requirement.
What the ship wants
The Seeker is described as small and agile with less room for parts, plus slots that increase melee-part damage.
Recommended direction
Prioritize compact melee pieces such as Orbiters, then use movement or area bonuses that do not consume too much usable grid space.
Avoid grid bloat
Large directional weapons can be awkward on a compact layout. If a part forces you to break several useful connections, recycle it rather than wreck the whole build.
Boss plan
Stay mobile, preserve a clear escape lane and trigger Overcharge while you can keep dealing damage safely.