- RADIOSOL has four ending branches shaped by companion trust, exploration, and final-act choices.
- The Loyal Signal rewards players who keep spider robot trust high and refuse the sacrifice.
- The Broadcast Truth requires finding hidden logs across the world before the finale.
- Radio Silence is the darkest branch — ideal for a second playthrough.
- Decisions accumulate: your playstyle from Chapter 1 onward steers the finale.
All Four RADIOSOL Endings at a Glance
RADIOSOL's finale branches based on how you treat your spider robot companion, how thoroughly you explore, and which choice you make at the endgame transmitter. Four distinct endings exist, each with its own requirements and tone.
| Ending | Branch Type | Difficulty to Unlock | Tone |
|---|---|---|---|
| The Loyal Signal | Companion | Medium | Hopeful, emotional |
| The Solitary Dawn | Lone Survivor | Low | Cold, pragmatic |
| The Radio Silence | Sacrifice | Medium | Dark, bittersweet |
| The Broadcast Truth | Discovery | High | Lore-complete, revelatory |
This guide contains full spoilers for RADIOSOL's late-game story, including companion story beats and every finale. Bookmark it and come back if you want a blind first playthrough.
Ending Requirements Compared
Each ending tracks different decisions. The table below breaks down the core conditions for every branch so you can plan your route.
| Ending | Companion Trust | Exploration Needed | Key Endgame Choice |
|---|---|---|---|
| The Loyal Signal | High, with personal beats done | Moderate | Refuse the sacrifice |
| The Solitary Dawn | Low or ignored | Low | Act independently |
| The Radio Silence | Failed, skipped, or rejected | Low | Accept the sacrifice |
| The Broadcast Truth | Any | Very high — hidden logs required | Broadcast the full truth |
The Loyal Signal
- Best for: Companion-focused players
- Requires high trust and completed companion storyline
- Both protagonist and spider robot survive
- Quiet, hopeful resolution
The Solitary Dawn
- Best for: Efficient resource playthroughs
- Requires self-sufficiency choices
- Protagonist finishes the mission alone
- Emptier, quieter aftermath scenes
The Radio Silence
- Best for: Second playthroughs
- Requires accepting the sacrifice option
- A critical loss silences the signal for good
- Unlocks unique final scenes
The Broadcast Truth
- Best for: Completionists
- Requires hidden logs and story fragments
- Recontextualizes the entire journey
- Hardest to unlock blindly
The Broadcast Truth and The Loyal Signal can be pursued on the same playthrough if you keep companion trust high while thoroughly collecting logs — but the final transmitter choice forces you to pick only one ending per run.
Step-by-Step: Unlocking the Loyal Signal
The companion ending is the emotional highlight for most players. Follow these steps to keep your run on track.
Interact Early and Often
Check on the spider robot at every rest point. Small interactions — repairs and idle responses — accumulate trust over the whole journey.
Complete Companion Story Beats
Finish the companion's personal storyline before the final act begins. Missing these beats locks you out of the ending regardless of trust level.
Invest in Companion Upgrades
Spend collected components on the companion's upgrade paths. Resilience upgrades matter most in the late game's high-hazard zones.
Refuse the Sacrifice
When the late-game sacrifice option appears, reject it. The companion then overrides a critical system at the climax, securing survival for both of you.
High companion trust also unlocks late-game dialogue and behavior options that simply don't exist on a cold playthrough — the bond is worth building even outside the ending itself.
How to Reach the Broadcast Truth Ending
The lore-complete ending depends on thorough exploration rather than combat or companion choices. Here's what to watch for as you traverse the world.
| Discovery Type | Where to Look | Why It Matters |
|---|---|---|
| Hidden logs | Collapsed passages, rooftop routes | Feed the truth-reconstruction chain |
| Lore fragments | Off-mission frequencies, static-heavy zones | Piece together the signal's origin |
| Signal sources | Follow strong radio static | Narrative caches most players miss |
| Revisited areas | Early regions, after upgrades | New routes open post-upgrade |
The spider robot's scan reveals collectible pings most players walk past. Run a full-band radio scan in every new region and send the companion ahead before entering large interiors.
Broadcast Truth Ending Checklist:
- Collect all hidden logs across every region
- Complete a full-band scan in each new area
- Piece together the truth behind the radio signal
- Reach the endgame transmitter decision point
- Choose to broadcast the full truth
FAQ
Q: How many endings does RADIOSOL have?
RADIOSOL has four ending branches: The Loyal Signal (companion), The Solitary Dawn (lone survivor), The Radio Silence (sacrifice), and The Broadcast Truth (discovery). Each is determined by companion trust, exploration, and your final-act choice.
Q: Can I see all RADIOSOL endings in one playthrough?
No. The transmitter decision in the final act locks you into a single ending per run. However, the Loyal Signal and Broadcast Truth requirements can be prepared simultaneously, letting you choose between them at the end.
Q: Which RADIOSOL ending is the hardest to unlock?
The Broadcast Truth is the hardest to unlock blindly because it requires uncovering hidden logs and environmental story fragments across the whole world before the finale, rather than relying on companion or combat choices.
Q: What happens if I ignore the spider robot companion?
Ignoring the companion steers you toward The Solitary Dawn or The Radio Silence. Low trust closes off the companion's late-game story beats and removes the option to refuse the sacrifice at the climax.