Current classification
SteamDB records Windows as the supported Steam system and does not expose a Deck rating for this sequel in the page checked. That is an evidence gap, not proof that the game can never run.
Reported cinematic blocker
A detailed Reddit report describes SMPTE color bars or a hang after Start New Game under Proton, with replies describing first-mission cinematic audio or frame freezes. This is community evidence. It does not establish the same result on every Deck, SteamOS version or Proton build.
Why we do not publish the conversion workaround
The thread proposes re-encoding installed cinematic files. That changes game content, requires technical steps and is not an official developer or Valve remedy. A safer guide should document the symptom, preserve the source and wait for an official media/transcode fix rather than turn an unverified modification into a one-click recommendation.
Safe checks
- Check the current Steam Deck compatibility panel in Steam itself.
- Update SteamOS, the game and the selected Proton runtime.
- Verify installed files after any failed modification attempt.
- Record whether the blocker occurs before gameplay, during the Prologue cinematic or at another movie.
Performance remains unbenchmarked here
No dated, repeatable retail Deck test in our approved sources establishes stable FPS, battery life or best graphics settings. Community anecdotes remain linked, not converted into numbers.
Evidence used
SteamDB app info · Linux/Proton community report · Valve Steam Deck information
Community reports describe individual experiences and demand. They do not prove that every player, platform or mission has the same result.