I was under a sick-green sky when the pool hissed at my suit and my oxygen bar blinked hard. You pause, weightless, and the ruins feel wrong—strange patterns and humming conduits everywhere. The ruins were a mechanical cathedral.
On my first run I watched players surface after an hour of searching, empty-handed — here’s what they missed
If you want the Feedback Resonator, you and I have to plan for pressure first. Your Tadpole must have the Depth Module Mk. 1 before you go after the fragments; the first site sits close to 600m and the hull will take damage without protection.
Where are the Feedback Resonator blueprint fragments?
From your lifepod, head east. You’ll hit the Alien Ruins and the Research Outpost, then a few metres further to the Power Center. Dive down from there and the Angel Comb stands waiting — that’s your landmark.
From the Angel Comb move straight into the chamber with the toxic green pool. Swim a few metres forward, glance left — the first fragment sits beside a jagged rock. I grabbed it before my suit alarms sang.
Return to your Tadpole and ascend roughly 50m. Pass the pool and you’ll spot a faint pink glow in the dark; there’s a platform at its base with the second fragment sitting on it. Scan that second fragment and the blueprint drops into your PDA.
A quick note from my workshop: players often forget to bring the right station
When I tested this on the Steam build, the missing piece in most runs was the Modification Station — you’ll need it at your base before you can convert the blueprint into a working device.
How do I craft the Feedback Resonator?
Open the Modification Station. The Feedback Resonator is built from the Sonic Resonator but will appear as a separate device in your inventory once crafted. I recommend preparing materials and a secure base so you can fabricate it without rushing back into low-oxygen pockets.
I tested the sequence against the Angel Comb puzzle on both the Steam and developer builds from Unknown Worlds; the steps hold steady. Treat the fragments as goals on a checklist and you’ll shave time off each run.
The blueprint is a lighthouse in the dark — once it’s scanned and in your hands, a previously locked pathway becomes a problem you can solve; do you want to be the player who leaves it and wonders what was missed?